CVE-2017-11506: Tenable Nessus

High severity, CVSS 7.4. EPSS: 0.6% chance of exploitation in the next 30 days.

When linking a Nessus scanner or agent to Tenable.io or other manager, Nessus 6.x before 6.11 does not verify the manager's TLS certificate when making the initial outgoing connection. This could allow man-in-the-middle attacks.

Affected products

• Tenable Nessus: version 6.0.0 only; version 6.0.1 only; version 6.0.2 only; version 6.1.0 only; version 6.1.1 only; version 6.1.2 only; …

Published 2017-08-09. Last modified 2026-06-17.