CVE-2025-24916: Tenable Nessus Network Monitor

High severity, CVSS 7.8. EPSS: 0.1% chance of exploitation in the next 30 days.

When installing Tenable Network Monitor to a non-default location on a Windows host, Tenable Network Monitor versions prior to 6.5.1 did not enforce secure permissions for sub-directories. This could allow for local privilege escalation if users had not secured the directories in the non-default installation location.

Affected products

• Tenable Nessus Network Monitor: before 6.5.1 (fixed in 6.5.1)

Published 2025-05-23. Last modified 2026-06-17.