CVE-2020-5919: F5 BIG-IP Access Policy Manager

High severity, CVSS 7.5. EPSS: 1% chance of exploitation in the next 30 days.

In versions 15.1.0-15.1.0.4, rendering of certain session variables by BIG-IP APM UI-based agents in an access profile configured with Modern customization, may cause the Traffic Management Microkernel (TMM) to stop responding.

Affected products

• F5 BIG-IP Access Policy Manager: from 15.1.0, before 15.1.0.5 (fixed in 15.1.0.5)

Published 2020-08-26. Last modified 2026-06-17.