CVE-2021-20106: Tenable Nessus

Medium severity, CVSS 6.5. EPSS: 1.3% chance of exploitation in the next 30 days.

Nessus Agent versions 8.2.5 and earlier were found to contain a privilege escalation vulnerability which could allow a Nessus administrator user to upload a specially crafted file that could lead to gaining administrator privileges on the Nessus host.

Affected products

• Tenable Nessus: up to and including 8.2.5

Published 2021-07-21. Last modified 2026-06-17.