CVE-2020-27716: F5 BIG-IP Access Policy Manager

High severity, CVSS 7.5. EPSS: 1.3% chance of exploitation in the next 30 days.

On versions 15.1.0-15.1.0.5, 14.1.0-14.1.3, 13.1.0-13.1.3.5, 12.1.0-12.1.5.2, and 11.6.1-11.6.5.2, when a BIG-IP APM virtual server processes traffic of an undisclosed nature, the Traffic Management Microkernel (TMM) stops responding and restarts.

Affected products

• F5 BIG-IP Access Policy Manager: from 11.6.1, up to and including 11.6.5; from 12.1.0, up to and including 12.1.5; from 13.1.0, up to and including 13.1.3; from 14.1.0, before 14.1.3.1 (fixed in 14.1.3.1); from 15.0.0, before 15.1.1 (fixed in 15.1.1)

Published 2020-12-24. Last modified 2026-06-17.