Tenable Network Monitor 2026 Release Notes

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Tenable Network Monitor 6.5.3 - 2026-01-27

Note: This release includes a fix for a potential vulnerability. For more information, see the Tenable Product Security Advisory.

The following are changed functionality and performance enhancements included in Tenable Network Monitor 6.5.3:

  • Updated the user interface to reflect the rebranding of Nessus Network Monitor (NNM) to Tenable Network Monitor (TNM).

  • Enhancements to telemetry data.

  • Tenable Network Monitor does not require a proxy username or password for transparent network proxies.

For more information about the features and functionality supported in this release, see theTenable Network Monitor 6.5.x User Guide and the Tenable Network Monitor Deployment Guide.

The following are security updates included in Tenable Network Monitor 6.5.3:

  • Support for libxml2/2.13.9

  • Support for libxslt/1.1.45

  • Support for expat/2.7.3

  • Support for c-ares 1.34.6

  • Support for curl 8.17.0

  • Support for sqlite3 3.49.0

Tenable Network Monitor 6.5.3 includes the following bug fixes:

  • Tenable Network Monitor on Windows now correctly detects the proxy service during upgrades from Tenable Vulnerability Management or a standard feed, which prevents an error message stating that the software update cannot include engine updates.

  • Updated the password change functionality to require users to provide their current password before making updates, which prevents unauthorized account takeovers if a session is compromised.

  • Tenable Network Monitor now prevents multiple simultaneous plugin download attempts when a connection to Tenable Security Center exceeds the maximum timeout.

Support is available for the following platforms:

  • Red Hat Linux ES 7 (RH 7.0 through 7.9) 64-bit

  • Red Hat Linux ES 8 / CentOS 8 (RH 8.2 through 8.10) 64-bit

    Note: This RPM is also supported in Oracle Linux 8 in Red Hat Compatible Kernel (RHCK) mode.

  • Red Hat Linux ES 9 (9.0 through 9.4) 64-bit

    Note: For all versions of Red Hat Linux ES and CentOS, Tenable Network Monitor requires that you have systemd and firewalld on your system.

  • Microsoft Windows 10, Server 2012, Server 2016, Server 2019, and Server 2022 (all 64-bit)

    Note: Tenable Network Monitor requires Microsoft Visual C++ Redistributable for Visual Studio 2015, 2017 and 2019. You must download the specific package vc_redist.x64.exe from the Microsoft downloads site.