Research Release Highlight – "Fully Scan Operational Technology" Default Setting Change
Summary The "Fully Scan Operational Technology" (OT) preference controls whether Nessus actively scans OT/ICS devices during a scan. This setting is intended to be disabled by default to avoid unintended disruption to sensitive operational technology environments. A long-standing setting in the Do not scan operational technology devices plugin caused this preference to default to enabled in a Basic Network Scan when the discovery type is not set to Custom. Change The default value for "Fully Scan Operational Technology" preference has been corrected from yes to no. Impact This fix will affect existing Basic Network scans automatically upon the next feed update — no scan recreation is required. Customers using Basic Network Scan policies with a non-custom discovery scan type will see the following behavioral change: Before change: "Fully Scan Operational Technology" was silently enabled, meaning OT devices may have been actively scanned. After change: "Fully Scan Operational Technology" will correctly default to disabled. Customers who intentionally want to scan OT devices should explicitly enable the "Fully Scan Operational Technology" preference by switching their scan policy's discovery type to Custom, which will expose the preference in the UI and allow it to be toggled on. Affected products: Tenable Security Center (SC), Tenable Vulnerability Management (TVM), and Nessus Target Release Date July 13, 2026
Tenable Product Update Newsletter — June 2026
Check out our June newsletter to learn about the latest product and research updates, events, and educational content. Tenable One - Platform Updates Improve exposure prioritization in Tenable One with continuous security control validation As frontier AI models accelerate vulnerability discovery, the work of validating, prioritizing, and remediating vulnerabilities alongside other security weaknesses to understand the true exposure they create has become much more urgent. Validation in exposure management is a key capability to help you understand which exposures attackers can actually reach by understanding the accessibility and exposure. Prioritize exposures more effectively by seeing which attack paths active prevention and detection controls mitigate. Accelerate investigations and triage by filtering top attack paths and attack techniques based on the presence of security controls. Understand control context and status by viewing security control information in the node details view. Check out continuous control validation in Tenable One: Read the blog post Explore the guided demo Read more about Attack Technique Details Tenable One Vulnerability Management Implement granular custom roles for enhanced access control Give your teams exactly the access they need to do their jobs — without exposing sensitive scan settings, sensors, or compliance reports. Streamline access control by building custom roles. You can now build granular custom roles that dictate exactly what your users can see and do within the platform. With straightforward, one-click toggles, you can grant read or full-write access to specific tools like scans, sensors, or reports. Your existing custom roles will automatically transition to this new format, so existing custom roles will transition seamlessly with no manual migration required. Take the guided walkthrough Read the documentation Review the best practice guide Gain comprehensive visibility into endpoint application risk Managing decentralized endpoint applications introduces visibility gaps. Focus your patching on the software your employees actually use, instead of chasing thousands of generic alerts. Get a single view of all software running on your endpoints with the new Endpoint Application Visibility and Exposures One-Stop Shop report. Prioritize fixes based on how widely an app is deployed and its actual risk to your business, rather than just relying on generic severity scores. Access the endpoint application visibility report Enhance your threat analysis expertise with specialist training You can now access the updated instructor-led Tenable One Vulnerability Management Specialist Course in Tenable University, featuring: Streamlined curriculum focusing on advanced analysis, enabling you to interpret data and counter threats faster. Deep dives into critical new features, including Vulnerability Intelligence and Exposure Response. Refreshed educational experience with hands-on lab exercises to solidify your expertise. Learn more about this course and other instructor-led and on-demand Tenable University training and certification offerings: Course details Tenable training and certification Tenable One Cloud Exposure Transform disparate alerts into one threat story with Tenable cloud detection and response Cloud detection and response (CDR) in Tenable One Cloud Exposure is now generally available, adding near-real-time behavioral detection across multi-cloud environments. Tenable CDR capabilities include: AI-powered threat stories: AI-powered threat stories automatically correlate related detections by actor, resource, and tactic, transforming hundreds of raw alerts into a clear narrative of the attack, allowing teams to start investigating instantly. Runtime vulnerability validation: Uses active scanning to confirm cloud resources that are reachable from the internet. Dual coverage: Combines agentless detections with an optional eBPF runtime sensor, giving security teams comprehensive near-real-time visibility across cloud workloads without sacrificing deployment flexibility or coverage. Guided response: As the agentic engine of Tenable One, Tenable Hexa AI is the intelligence layer that reasons across live exposure context, threat findings, and environment history to deliver a prioritized, actionable response plan, in plain language, at attacker speed. With Tenable CDR, teams can leverage AI-driven pathways to investigate and remediate with speed, drive informed, actionable resolution, close the exposure gap, and extend attack path analysis to holistic remediation of real threats. Watch the guided demo Tenable One OT Exposure Tenable OT Security 4.7 (early access) This release expands visibility for grid operators and disconnected environments, and introduces a variety of productivity enhancements to accelerate analyst workflows: Power substation anomaly detection: Passively monitor GOOSE streams and alert on anomalous activity to protect utility and grid operations from unauthorized modifications or replay attacks. Yokogawa DCS activity detection: Get deep visibility into engineering activities on Yokogawa systems to easily detect critical operations and unauthorized access. OT agent for disconnected environments: Secure air-gapped networks without deploying sensors or requiring live connectivity, featuring offline scan profiles and a local agent UI. Workflow and enterprise management enhancements: Centrally manage subnets from a single Enterprise Manager interface, and speed up recurring investigations with new Saved Views, a quick-access Asset Side Panel, and TLS Syslog support. Explore the user guide Review the release notes Tenable Security Center Tenable Security Center 6.8 Focus on the vulnerabilities that matter with AI-powered VPR insights and mitigation guidance. This release streamlines your operations with unified asset repositories for IPv4, IPv6, and Agents, and improves efficiency with new background query processing and scan optimization capabilities. View the full release notes Tenable Nessus Maximize your Nessus capabilities with the Tenable Documentation hub Optimize your vulnerability assessments and accelerate troubleshooting with the official Tenable Nessus Documentation hub. Want to ensure you’re getting the absolute most out of your vulnerability assessments? Whether you’re a seasoned security pro fine-tuning your environment or just setting up your first Nessus Pro or Expert deployment, the hub provides everything you need to optimize your security workflows and troubleshoot: Stay ahead of the curve: Instantly access the latest release notes, system requirements, and seamless upgrade guides. Optimize your assessments: Find step-by-step instructions for configuring and launching scans. Streamline your reporting: Learn exactly how to customize, generate, and export compliance-ready scan results in PDF, HTML, or CSV formats to keep your stakeholders informed. Bookmark the documentation site to quickly discover new features, resolve configuration questions, and keep your attack surface secure. Tenable Nessus documentation Tenable Patch Management Synchronize asset tags across patching workflows Sync your existing security tags directly with your patching workflows to eliminate manual setup and fix vulnerabilities faster. If you already group your devices using tags or asset lists in Tenable One Vulnerability Management or Tenable Security Center, those groups will automatically synchronize with your patch console. You can target them for patch schedules and deployment waves without rebuilding them from scratch. This update also extends full patch support to SUSE Linux 15 SP6 (Server & Desktop). Get the full update details on Tenable Connect Tenable events and webinars Customer office hours These are recurring ask-me-anything sessions for Tenable Security Center, Tenable One Vulnerability Management, Tenable One Cloud Exposure, Tenable One Identity Exposure, and Tenable One OT Exposure. Time-zone-appropriate sessions are available for the Americas, Europe (including the Middle East and Africa), and Asia-Pacific (APAC). Learn more and register Virtual events Tenable customer update, July 2026: Join the next quarterly customer update session at 11 a.m. EST/3 p.m. BST/5 p.m. CEST July 16. This informative, fast-paced overview will explore how to better secure your expanding attack surface and consolidate critical security data. Products covered include: Tenable One, Tenable One AI Exposure, Tenable One Vulnerability Management, and Tenable Security Center. Register See all upcoming live and on-demand webinars Tenable Research Research security operations Read the latest insights from top security and data science researchers: Inside the customer environment: Where threat actors, vulnerabilities, and exposed assets intersect Key findings from the Verizon DBIR 2026 Read Tenable documentation.
VMware Integration vSphere 9.0 Compatibility
Summary We are pleased to announce that Tenable's VMware integration for vulnerability scanning now supports VMware vSphere 9.0 (ESXi 9.0 and vCenter Server 9.0). These updates will be available in Tenable Vulnerability Management, Nessus, and Tenable Security Center. Change Tenable has updated its VMware integration to support VMware ESXi 9.0 and VMware vCenter Server 9.0. Authenticated vulnerability scans can now be performed on these targets without the need for additional credential setup. VMware vSphere 9.0 compatibility covers the following scenarios: VMware ESX SOAP API authenticated scans against ESXi 9.0 hosts VMware vCenter API authenticated scans against vCenter Server 9.0 VMware vCenter auto-discovery flows for 9.0 hosts For more information see our user documentation: Welcome to Tenable for VMware Impact No impact to current scans are expected; existing ESXi 8.x and earlier vCenter scans continue to work as before. If customers encounter issues with this integration, please open a ticket with Technical Support. Tenable will engage with VMware as needed to identify and resolve any issues. Release Date Available Immediately (May 27, 2026) for Tenable Vulnerability Management, Nessus, and Tenable Security Center Note: TDB for updates to enable VMware ESXi 9.0 and VMware vCenter Server 9.0 compatibility with Compliance and Audit scanning.
Improvement to Printer OS Fingerprinting
Updated: April 3, 2026 Summary Scanned printers will now have an OS artefact surfaced in their scan host metadata if the target has been identified as a printer when the “Scan Network Printers” policy option is disabled. This change will not cause any additional asset licenses to be consumed within Tenable VM or Tenable Security Center. Background Printers are notoriously unstable scan targets. Oftentimes, they can behave erratically when scanned, so some users prefer to avoid scanning them altogether. At present, there is a switch in the scan policies to prevent further scanning of a host when it's identified as a printer. To enable this setting, go to Settings -> Host Discovery -> Fragile devices - Scan Network Printers (Currently, this is a checkbox setting, default value “off”). With that said, how can the scanner know the target is a printer if it cannot be scanned? In reality, the scanner still performs very basic fingerprinting (usually via SNMP) in order to gather enough information to make an educated guess at the device type. When the scan target is thought to be a printer, it essentially gets marked as “Host/dead" in the scan KB. When this happens, the scanner will not perform any further active scanning. Changes With this update, the fingerprint used to identify the printer as such, will now be stored in the scan Knowledge Base (KB) so it can be processed by os_fingerprint2.nasl ("Post-scan OS Identification", plugin ID 83349) and surfaced as metadata in the scan result. The relevant policy setting located at Settings -> Host Discovery -> Fragile devices -> Scan Network Printers. With this update, the printer's OS information will now be surfaced if it is available, regardless of the selected value for this setting. Impact Users can now see the OS information for their printer devices that would have otherwise gone unreported if the scan is not configured to “Scan Network Printers”. As plugin ID 83349 generates no plugin output, only an “operating-system” tag will be added to the scan result (and stored in an exported .nessus file). This information will be visible only the in “Host/Asset Details” section of the Tenable product UI, i.e: Tenable Nessus: Scans -> [Folder] -> [Individual Scan Result] - > Host Details -> OS (sidebar) Tenable Vulnerability Management: Explore -> Assets -> [Asset] -> Details -> Operating System Scans -> Vulnerability Management Scans -> [Individual Scan Result] -> Scan Details -> Asset Details -> Operating System Tenable Security Center: Analysis -> IP Summary -> [IP address] -> System Information -> OS Scans -> Scan Results -> [Individual Scan Result] -> IP Summary -> [IP address] -> System Information -> OS Note, we expect this information to surface mainly in individual scan results. It would only be present in cumulative asset details if a licensed asset already exists for the target in question. This update will not cause additional assets to be created or consume any additional licenses. Affected Plugins 83349 - os_fingerprint2.nasl 11933 - dont_scan_printers.nasl 22481 - dont_scan_settings.nasl Targeted Release Date Wednesday, March 4, 2026May 2026 Tenable Product Newsletter
Check out our May newsletter to learn about the latest product and research updates, events, and educational content — all to help you get more value from your Tenable solutions. Tenable One Tenable Hexa AI: Intelligence into action at machine speed. We are thrilled to announce that Tenable Hexa AI, the agentic engine of the Tenable One Exposure Management Platform, is now generally available. Tenable Hexa AI orchestrates and automates security workflows to accelerate risk reduction. Built-in or custom agents: Start immediately with our pre-built agents for common security tasks like asset management and dashboard creation, or build custom agents via the MCP server for your unique environment. Execute the fix: Tenable Hexa AI handles complex multi-step tasks like identifying the root cause of a threat and automatically creating the necessary remediation tickets. Automate with confidence: You define the guardrails. Every action is fully auditable and requires the level of human oversight you choose, so you can scale automation without risking your production environment. Get more details on Tenable Connect or read the documentation. To learn more about how to leverage Tenable Hexa AI, reach out to your account team or contact us. The Tenable One Open Connector Connect more. See more. Act faster. We built Tenable One to be the open, connected hub that turns your scattered tools into a one-stop shop for risk reduction. While our standard Connectors already keep your favorite tools in sync, we’re taking integration to the next level with the new Tenable One Open Connector. We're no longer just talking about official integrations; we're talking about bringing in your data from across unsupported or custom tools, spreadsheets, and even homegrown internal systems. What this means for you: Get a more complete view of risk by bringing your security data together in a single, contextual view. Unlock an open, flexible platform for your security stack by staying independent of pre-built integrations. Act faster with automated data syncs that keep your information always current. Tailor your data mapping to enable precise segmentation that fits your organization’s needs. Ready to achieve a truly unified view of your entire attack surface? Read the blog and view the demo. To get started, see the setup guide. Lifecycle management in attack path analysis Take control of your security workflows with our new lifecycle management features in attack path analysis. You can now manually transition attack techniques through specific stages — To Do, In Review, In Progress, Resolved, and Excluded — to ensure seamless collaboration across your team. What’s new: Manual technique control: Track progress accurately by assigning specific statuses to each technique. Smart attack path sync: When you update a technique’s status, the system automatically updates the status of all related attack paths to reflect that change. Unified workflow: Align your team around a shared lifecycle, providing a clear and consistent view of every identified threat. Learn more. Tenable One + Recorded Future integration Our new Recorded Future connector bridges the gap between your internal exposure data and the external threat landscape, giving you a single source of truth to accelerate remediation where it matters most. By layering Recorded Future’s threat intelligence over Tenable’s deep attack surface visibility, you can now achieve: Truly unified visibility: View high-fidelity threat intelligence alongside your full exposure data in one pane of glass. Holistic context: Instantly see how internal asset criticality aligns with real-world exploit trends. Targeted remediation: Ignore the noise and focus exclusively on the vulnerabilities threat actors are actively weaponizing in the wild. Learn more. Tenable integrates with the Claude Compliance API for AI governance Tenable has announced an integration between the Tenable One Exposure Management Platform and the Claude Compliance API. This new capability provides security and compliance teams with unprecedented visibility and governance over enterprise AI usage directly within their existing workflows. Key highlights of this release include: Granular visibility: Monitor enterprise Claude AI interactions, including chats and file uploads, natively within Tenable One. Risk detection: Identify malicious or suspicious activity across your AI ecosystem. Regulatory alignment: Ensure AI usage complies with corporate acceptable-use policies and global mandates like the EU AI Act. This integration is available immediately for all Tenable One customers, allowing organizations to safely adopt Claude Enterprise at scale while proactively managing AI-related risks. Tenable One Cloud Exposure This month, we are focusing on automated orchestration and shifting security further left into native developer workflows. What's New: Retroactive cloud automations: Apply new or re-enabled automation rules retrospectively to your entire backlog of cloud findings to wipe out historical cloud risks in a single click. 280 cloud-native secret types: Our original generic categories are now split into 280 specific data types (like GitHub App Tokens), allowing you to customize sensitivity criteria to fit your exact cloud compliance requirements. Native PR scanning (IaC): Catch security risks natively inside GitHub and Azure DevOps pull requests so developers can fix configuration errors directly on the relevant lines of code before merging. Windows container scans: Maintain robust protection across your entire application footprint with shift-left vulnerability scanning that now supports Windows-based container images within cloud CI/CD pipelines. On-demand registry scans: Manually push critical cloud container images or full repositories to the top of the scan queue to instantly verify your security fixes. For more information on these updates, please view “documentation” inside the Tenable One Cloud Exposure interface. Tenable One Vulnerability Management Automate remediation with direct ticketing Stop bouncing between disconnected tools. You can now create Jira or ServiceNow tickets directly within your Explore Findings view and launch Exposure Response Initiatives straight from Vulnerability Intelligence. Even better, Tenable automatically closes these tickets the moment a vulnerability is fixed, eliminating tedious manual cleanup for your team. To keep your security and IT teams aligned, we've also added live ticket log tracking inside the finding details page, new ticket filters for your findings table, and easy exports for Exposure Response logs. To get started, check out our documentation or interactive tour. Clear your blind spots and validate your security coverage To protect your network, you need to know your security tools are working correctly. New dashboards and reports help you eliminate hidden gaps and prioritize fixes faster. The program health dashboard monitors your deployment health and scanning coverage. It gives you a central view to ensure your security agents are active and fully patched, preventing silent operational failures. The program health report unifies fragmented asset data and scan authentication indicators into a single document. It resolves conflicting inventories and credential issues, giving you a clean, trusted report to plan and execute remediation. The endpoint application visibility dashboard cuts out the hours your team spends hunting down software inventories. It automatically consolidates application data across endpoints so you can prioritize fixes based on real-world exploit likelihood and deployment scale. Nessus Whether you are a seasoned pro with Nessus or just starting out as a first-time user, don’t forget to check out our on-demand training courses and learn from the team that built Nessus. Nessus Fundamentals: Maximize your Nessus Professional or Expert deployments. You’ll master the essential building blocks of vulnerability assessment, conquering everything from initial installation and asset discovery to compliance checks and in-depth analysis. No prerequisites necessary. Nessus Advanced: Elevate your Nessus Expert skills. You’ll build upon your foundational knowledge to take command of external attack surface discovery, web app scans, and results analysis. Accelerate your time-to-value with a full year of unlimited access to expert-led video instruction. You will master critical workflows, maximize your security ROI, and earn a digital badge and Certificate of Completion to validate your hard-earned expertise. Learn more and enroll today at www.tenable.com/buy/training Tenable Security Center Tenable Security Center 6.8 Focus on the vulnerabilities that matter with AI-powered VPR insights and mitigation guidance. This release streamlines your operations with unified asset repositories for IPv4, IPv6, and Agents, and improves efficiency with new background query processing and scan optimization capabilities. View the full release notes to learn more. Tenable Patch Management Scale patching and simplify upgrades Broader environment coverage, faster endpoint updates, and a much smoother platform upgrade are available with the latest releases. Version 10.1.971.12 (SaaS & on-premise) expands your coverage across new Linux distributions and architectures. On your endpoints, you can now run lightweight, native driver and BIOS updates without the heavy files that cause CPU bloat, and deploy Windows upgrades via bandwidth-saving peer-to-peer rollouts. This release also cuts console memory usage, hardens library security, and fixes interface bugs affecting patch previews. Version 10.1.972.14 (server) delivers a targeted hotfix that corrects server upgrade task-sequencing and strategy validation issues, ensuring you a seamless, error-free migration from older versions. Broader environment coverage, faster endpoint updates, and a much smoother platform upgrade are available with the latest releases. Version 10.1.971.12 (SaaS and on-premises): Expands your coverage across new Linux distributions and architectures. On your endpoints, you can now run lightweight, native driver and BIOS updates without the heavy files that cause CPU bloat, and deploy Windows upgrades via bandwidth-saving peer-to-peer rollouts. This release also cuts console memory usage, hardens library security, and fixes interface bugs affecting patch previews. Version 10.1.972.14 (server): Delivers a targeted hotfix that corrects server upgrade task-sequencing and strategy validation issues, ensuring a seamless, error-free migration from older versions. How to update: SaaS tenants have been updated automatically. For on-prem deployments, download the latest installers via the Tenable Downloads Portal. For the further details, check out the release notes. Tenable One OT Exposure Tenable OT Security 4.6 Our latest release introduces a variety of new features and performance enhancements, including refined scan controls and streamlined workflows for large-scale enterprise environments. Massive subnet scaling: Now supports up to 5,000 subnets per ICP, significantly increasing visibility for distributed large enterprise deployments. Centralized network management: A new Monitored Networks page includes bulk-add capabilities and the ability to stage inactive networks before monitoring. Precision scanning: New scan customization options allow you to define specific credential usage per scan for safe discovery of sensitive assets. Streamlined platform navigation: Updated workflow for SSO/SAML users allows you to instantly pivot back to Tenable One with a single click. Remote agent updates and query restrictions: Update OT agents directly from the ICP, remove local site visits or manual CLI intervention, and restrict specific protocol queries with OT agents. Enhanced diagnostics: Deeper metadata in asset log exports for faster troubleshooting. IoT connector updates: Major stability and performance upgrades for Milestone, AvigilonES, and Exacq Edge integrations for IoT asset discovery. Update required: Tenable OT Security 4.5 Service Pack (version 4.5.61) All customers running version 4.5 should apply this upgrade immediately for optimal system stability and performance when processing high volumes of network conversations. This update also addresses communication gaps with Rockwell Stratix devices and Nessus scans. View the full release notes. Tenable Ecosystem Tenable App for Microsoft Sentinel v3.1.2 Version 3.1.2 of the Tenable App for Microsoft Sentinel is now available, bringing connector enhancements and schema updates to optimize your integration. What’s new: TIE data connector: The UI now supports multiple rsyslog configurations. Schema updates: Updated table schemas for Tenable One Vulnerability Management and Tenable One Web App Scanning vulnerabilities within the ARM Template. Improved data handling: The Tenable Vulnerability SDK now utilizes indexed_at instead of last_found. We highly recommend upgrading to v3.1.2 to ensure full support for these latest changes. For more details, please read Tenable Documentation or visit the Azure Marketplace to download. Please note, this application is also available via the Microsoft Azure Gov Cloud marketplace. Tenable events and webinars Tune in for product updates, demos, how-to advice and Q&A. See all upcoming live and on-demand webinars at https://www.tenable.com/webinars. Customer Office Hours These are recurring ask-me-anything sessions for Tenable Security Center, Tenable One Vulnerability Management, Tenable One Cloud Exposure, Tenable One Identity Exposure and Tenable One OT Exposure. Time-zone-appropriate sessions are available for the Americas, Europe (including the Middle East and Africa and Asia Pacific (APJ). Learn more and register here. On-demand TenableTalk Live: Responding to Mythos and Frontier AI vulnerability discovery: Catch the replay of this conversation about the impact of frontier AI models on the threat landscape and how security teams can evolve vulnerability discovery into a machine-speed agentic defense. Watch on LinkedIn or in Tenable Connect. Tenable customer update: April 2026: Watch this quarterly Tenable customer update to learn how to use AI to augment your security team, secure your expanding AI attack surface, uncover hidden risk across your connected IT/OT environments, and more. Products covered: Tenable One, Tenable One AI Exposure, Tenable One Vulnerability Management, OT functionality, third-party data connections, and Tenable Security Center. Tenable Research Research Security Operations Subscribe to the Research team blog posts here. Why the approaching flood of vulnerabilities changes everything — and what to do about it New content Almost 7,000 new published vulnerability plugins. More than 60 new audits delivered to customers. Read Tenable documentation.
NuGet Package Enumeration Updates
Summary Tenable has updated the NuGet package enumeration plugins to improve detection of installed NuGet packages on Linux/Unix scan targets. Change Before this update, the NuGet package enumeration plugins did not attempt to associate detected packages with an RPM or DEB package managed by the Linux distribution. This could cause packages to report vulnerabilities both based on a Linux distribution vendor's advisory and a CVE advisory from the NuGet package maintainer. After this update, these issues have been addressed. NuGet packages on Linux assets will be assessed to determine if they are managed by a Linux distribution's package manager, and if so, will be marked as “Managed” and will not report a vulnerability, unless the Show potential false alarms setting is enabled for the scan. Impact Most customers will notice improved accuracy in NuGet package vulnerability reporting. Scan results may show changes in detected vulnerabilities based on how packages were previously assessed. Affected plugins 190687 - NuGet Installed Packages (Linux / Unix) Target Release Date June 1, 2026Cisco Meraki API Host Guidance
Summary Tenable is announcing changes to our documentation for the Cisco Meraki API integration. Customers using a “unique” host in the “Cisco Meraki Host” field of the credential should use “api.meraki.com”, or a region-specific instead if applicable. Please refer to the documentation for full guidance. Tenable and Cisco Meraki Integration Guide Impact Customers using the Cisco Meraki API integration are encouraged to check their configurations and update them accordingly. This change in guidance addresses cases where some customers were experiencing HTTP 308 redirects, resulting in integration failures. This is also closely related to cases where customers were experiencing HTTP 403 errors, which has been addressed by changes in the Cisco Meraki API Web Application Firewall (WAF). Release Date Dec 15th, 2025Delinea Platform Authentication Support
Summary We are proud to announce that Tenable’s Delinea Secret Server Privileged Access Management (PAM) integration can now use Delinea Platform Authentication method. These updates are immediately available for scans in Tenable Vulnerability Management and Nessus Manager, with plans to release this feature at a later date in Tenable Security Center. Change With this addition, instead of just connecting to the standalone Secret Server, scans can now authenticate via the Delinea Platform, leveraging centralized identity and the security of the newer Delinea architecture. Delinea Platform Authentication method supports following credential types for Delinea Secret Server mode: Windows SSH Database Nutanix VMware ESX SOAP API VMware vCenter API Delinea Platform Authentication method also supports following the credential types for Delinea Secret Server Auto-Discovery mode: Windows SSH Database For more information see our user documentation: https://docs.tenable.com/integrations/Delinea/Content/Introduction.htm Impact No impact to current scans are expected; If customers encounter issues with this integration, please open a ticket with Technical Support. Tenable will engage with Delinea as needed to identify and resolve any issues. Release Date 11 May 2026 for Tenable Vulnerability Management and Nessus; TBD for Security CenterApril 2026 Tenable Product Newsletter
Check out our April newsletter to learn about the latest product and research updates, upcoming and on-demand webinars and educational content — all to help you get more value from your Tenable solutions. EXPOSURE 2026 The Tenable Exposure Management Conference There’s still time to register for EXPOSURE 2026, the first and only in-person event dedicated to exposure management for the AI era. Join us in Boston, Mass., from May 19-21, 2026, to: Get a practical blueprint for securing your AI attack surface. Hear real-world strategies from the industry’s top security executives. Master new techniques in hands-on labs and exclusive training sessions. Register now! Product update: Standardizing Tenable risk scoring Coming July 1: A new standard for VPR For the past several months, many customers have utilized VPR (Beta) to gain deeper insights into exploitability. We are excited to announce that on July 1, this model will be promoted to the primary Vulnerability Priority Rating (VPR) across the Tenable platform. By standardizing on this advanced model, we are retiring legacy VPR scoring to ensure every customer benefits from our most sophisticated threat intelligence. We're also enhancing our asset classification engine. As a result, customers with access to Asset Criticality Ratings (ACR) will see these scores more accurately reflect real-world business risk. Read the full update on Tenable Connect. Tenable Cloud Security Stop chasing ghosts. Start fixing what's actually exposed. This month, we’re trading “potential risk” for proof. Spotlight: Reachability, validated Network Scanner results now feed directly into our core risk engine. Instead of flagging every internet-facing asset, Tenable dynamically confirms what’s actually reachable across AWS, GCP, Azure, and OCI, so you chase toxic combinations on truly exposed assets, not shadows behind a WAF. Also new Unified accounts page. One view for every cloud and identity account. Goodbye, provider silos. More wins for your team Protect dev velocity. Exclude unresolvable CVEs from container scans so noise doesn’t break builds. Effortlessly scale triage. Turn any Explorer investigation into a permanent automation rule. Automate least privilege. Auto-generate custom roles for over-privileged Entra ID and GCP groups based on real usage. Find what others miss. Updated engine surfaces vulnerabilities buried in nested JAR files. View full release notes → Tenable Vulnerability Management Introducing VM-Native OT Discovery Safely identify and profile connected PLCs, HMIs, and IoT devices using the vulnerability management toolset you already own. No specialized hardware or complex deployments required. Turn your existing IT security tools into a safe OT discovery engine today and get visibility into your IT/OT security gap. Watch the guided demo to see this new capability in action. Review the latest documentation for Scan Templates and Discovery Settings to get started. Find and fix hidden risks across your infrastructure To protect your environment, you need a clear view of every asset and vulnerability. New reports and dashboards give you visibility to find hidden exposures in your Java, database, and operating system layers before they lead to a disruption. Identify every Java vulnerability: Go beyond a simple update to secure Java and see how unmanaged applications expand your risk. Java visibility and exposures dashboard: Get a full view of your Java ecosystem to find legacy flaws and library exploits that could give attackers access to your internal network. Java visibility and exposures report: Turn complex scan data into a clear map of your assets to find hidden weaknesses in unpatched installations before they cause a disruption. Prioritize your database security: Protecting your data depends on knowing which databases are most vulnerable. This new report and dashboard help your team close exposures and meet audit requirements by highlighting critical gaps. Database application visibility and exposures dashboard: Use this one-stop shop to see all supported and unsupported databases in one place. You can quickly see which assets are exploitable or have been active for too long, so you know what to patch first. Database visibility and exposures report: Streamline your compliance audits and vulnerability assessments with a clear breakdown of your database risks and best practices. Inventory your assets and improve scan accuracy: Full visibility requires knowing exactly what is running on your network. Operating system and application inventory with data troubleshooting report: Get a high-level summary of your OS and application instances. Includes specific queries to help you identify and fix scan fidelity issues for data accuracy and effective security operations. Tenable Nessus We’re thrilled to announce that Tenable Nessus v10.12 is now available for early access, with general availability expected later this month. This release streamlines your workflow with a revised interface and updated security protocols. Organize scans: Simply drag and drop existing scans from a list view directly into a folder or directory for easier organization. Import files: Instantly import a scan file (like .nessus) by dragging it from the local desktop into Nessus. OpenSSL 3.5 support: Nessus now fully supports OpenSSL 3.5, ensuring your vulnerability assessment operations meet the latest cryptographic standards. FIPS-140.3 support: Support for the FIPS 140-3 standard has been added. View Nessus 10.12 product documentation for more info Tenable Security Center Tenable Security Center 6.8 Focus on the vulnerabilities that truly matter with AI-powered VPR insights and clear mitigation guidance. This release streamlines your operations with unified asset repositories for IPv4, IPv6, and Agents, and improves efficiency with new background query processing and scan optimization tools. Foundational visibility for cyber-physical systems with VM-native OT Discovery We recently added native OT discovery capabilities in Tenable Security Center, allowing you to quickly map unknown/unmanaged cyber-physical systems (PLCs, IoT devices, etc.) using the tools you already own. Get insight into mission-critical OT assets across your network without risking disruption or the need for additional agents or add-on purchases. Find out how to configure your first scan here. View full release notes → Tenable OT Security Introducing Tenable OT Security 4.6 Our latest release introduces a variety of new features and performance enhancements, including refined scan controls and streamlined workflows for large-scale enterprise environments. Massive subnet scaling: Now supports up to 5,000 subnets per ICP, significantly increasing visibility for distributed large enterprise deployments. Centralized network management: A new Monitored Networks page includes bulk-add capabilities and the ability to stage inactive networks before monitoring. Precision scanning: New scan customization options allow you to define specific credential usage per scan for safe discovery of sensitive assets. Streamlined platform navigation: Updated workflow for SSO/SAML users allows you to instantly pivot back to the Tenable One platform with a single click. Remote agent updates and query restrictions: Update OT agents directly from the ICP, remove local site visits or manual CLI intervention, and restrict specific protocol queries with OT agents. Enhanced diagnostics: Deeper metadata in asset log exports for faster troubleshooting. IoT connector updates: Major stability and performance upgrades for Milestone, AvigilonES, and Exacq Edge integrations for IoT asset discovery. Update required: Tenable OT Security 4.5 Service Pack (version 4.5.61) All customers running version 4.5 should apply this upgrade immediately for optimal system stability and performance when processing high volumes of network conversations. This update also addresses communication gaps with Rockwell Stratix devices and Nessus scans. View full release notes → Tenable Identity Exposure Sharper signal. Steadier platform. This month, we are making the detections you rely on more precise, and the platform underneath more resilient. Detections that cut through the noise Golden Ticket IoA, now directory-aware. Smarter logic means fewer false positives and fewer missed hits in multi-domain environments. Richer PetitPotam context. Detections now surface hostnames and source IPs, so triage starts with answers, not questions. Platform you can count on Accurate API pagination. Iterate through result sets cleanly for faster, more reliable reporting. Self-healing listeners. RabbitMQ and Sysvol connections now auto-recover after restarts or network blips. View full release notes → Tenable PCI ASV Tenable PCI ASV interface update The Tenable PCI ASV interface will change on or around May 8, 2026, to simplify your compliance workflow. Changes will not affect your data, scan history, attestation records, or scan configurations. Here’s what’s changing: Renamed actions: Submit PCI is becoming Import to ASV Workbench, and the In Remediation tab changes to Scan Customer Review. Easier review: A new Accept button and compliance dialog let you confirm requirements in fewer clicks, with a progress indicator to track your status in real-time. Unified vulnerability view: Failures and Disputes merge into a single Vulnerability Review & Disputes tab. Updated Navigation: The Submit to ASV Review button is moving to a more intuitive position in the workflow. The changes will happen automatically. You don’t need to take action. Questions? Contact Tenable Support or your Customer Success Manager. Tenable Training and Product Education Enhanced Tenable Vulnerability Management training now available Maximize your security investment with the redesigned Introduction to Tenable Vulnerability Management course, available at no cost in Tenable University. This updated experience includes interactive elements, demonstration videos, and knowledge checks to help you quickly gain practical expertise. You will navigate the latest user interface with ease while implementing recommended settings to optimize your platform configuration from day one. Tenable Connect Join the Tenable Connect Office Hours group Missed a live Office Hours session? No problem! We are excited to launch the official Office Hours group to provide you with a centralized hub for Office Hours sessions and support. When you join the group, you’ll be able to: Watch recordings: Access the library of past regional Office Hours sessions at your convenience. Review key Q&As: Review important questions and expert answers from every call so you can find solutions without watching the full video. Search with ease: Use Tenable Connect’s unified search to find specific topics discussed across any of our recorded sessions. Don't miss a beat! Join the group to catch up on the latest sessions and stay ahead of the curve. And register for upcoming live Office Hours sessions here. Tenable Webinars Tune in for product updates, demos, how-to advice, and Q&A. See all upcoming live and on-demand webinars at tenable.com/webinars. On-demand Tenable customer update: April 2026: Watch this quarterly Tenable customer update to learn how to use AI to augment your security team, secure your expanding AI attack surface, uncover hidden risk across your connected IT/OT environments, and more. Products covered: Tenable One, AI Exposure, Tenable Vulnerability Management, OT functionality, third-party data connections, and Tenable Security Center. Customer Office Hours Recurring ask-me-anything sessions for Tenable One, Tenable Security Center, Tenable Vulnerability Management, Tenable Cloud Security, Tenable Identity Exposure and Tenable OT Security. Time-zone-appropriate sessions are available for the Americas, Europe (including Middle East and Africa), and Asia Pacific (APJ). Register here. Tenable Research Research Security Operations blog posts Subscribe to the Research team blog posts here. The hidden cost of AI speed: Unmanaged cyber risk Supply chain attack on Axios npm package: Scope, impact, and remediations Research release highlights Potential Vulnerabilities: Tenable Research is officially introducing Potential Vulnerabilities. A potential vulnerability is a finding that has a lower degree of certainty as to whether the assessed application is or is not vulnerable. Improvement to printer OS fingerprinting: Scanned printers will now have an OS artifact surfaced in their scan host metadata if the target has been identified as a printer when the Scan Network Printers policy option is disabled. Content coverage highlights Almost 4,500 new published vulnerability plugins. More than 130 new audits delivered to customers. Read Tenable documentation.Plugin output for language library enumeration
Summary The plugins that enumerate Node.js, Python, and Ruby packages will now list the discovered packages in their output. Change Before this update, Tenable had updated some of the “language library” enumeration plugins - specifically for Node.js, Python, and Ruby - so that they would no longer list the discovered packages in the plugin output. This was a performance-related decision. When scanning assets with a substantial number of discovered packages, Tenable found that in many cases the size of the findings set would be so large that it would exhaust the memory allocated to the plugin and cause the plugin to crash without reporting. This would prevent downstream vulnerability plugins from detecting vulnerable packages and result in false negatives. Tenable found this to be a less desirable outcome, and began investigating solutions to make these findings sets available at the platform level. Customer feedback has led us to revert this change and develop an alternative solution for reporting from these plugins. After this update, the plugins below will now list the discovered packages, along with their path and version, in the plugin output, which can be used to locate specific installed packages on assets. Tenable will continue to investigate a platform-level feature to allow customers to locate specific language libraries across all managed assets in Tenable One. Impact Plugin output for updated plugins will include a list of detected packages. This may substantially increase the size of scan results in accordance with the number of detected packages. Plugins 200172 - Node.js Modules Installed (Windows) 179440 - Node.js Modules Installed (Linux) 178772 - Node.js Modules Installed (macOS) 181215 - Python Installed Packages (Windows) 164122 - Python Installed Packages (Linux/macOS) 240646 - Ruby Gem Modules Installed (macOS) 207585 - Ruby Gem Modules Installed (Windows) 207584 - Ruby Gem Modules Installed (Linux) Target Release Date April 27, 2026
