CVE-2020-5926: F5 BIG-IP Access Policy Manager

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

In BIG-IP versions 15.1.0-15.1.0.4, 15.0.0-15.0.1.3, and 14.1.0-14.1.2.6, a BIG-IP virtual server with a Session Initiation Protocol (SIP) ALG profile, parsing SIP messages that contain a multi-part MIME payload with certain boundary strings can cause TMM to free memory to the wrong cache.

Affected products

• F5 BIG-IP Access Policy Manager: from 14.1.0, before 14.1.2.7 (fixed in 14.1.2.7); from 15.0.0, before 15.0.1.4 (fixed in 15.0.1.4); from 15.1.0, before 15.1.0.5 (fixed in 15.1.0.5)
• F5 BIG-IP Advanced Firewall Manager: from 14.1.0, before 14.1.2.7 (fixed in 14.1.2.7); from 15.0.0, before 15.0.1.4 (fixed in 15.0.1.4); from 15.1.0, before 15.1.0.5 (fixed in 15.1.0.5)
• F5 BIG-IP Analytics: from 14.1.0, before 14.1.2.7 (fixed in 14.1.2.7); from 15.0.0, before 15.0.1.4 (fixed in 15.0.1.4); from 15.1.0, before 15.1.0.5 (fixed in 15.1.0.5)
• F5 BIG-IP Application Acceleration Manager: from 14.1.0, before 14.1.2.7 (fixed in 14.1.2.7); from 15.0.0, before 15.0.1.4 (fixed in 15.0.1.4); from 15.1.0, before 15.1.0.5 (fixed in 15.1.0.5)
• F5 BIG-IP Application Security Manager: from 14.1.0, before 14.1.2.7 (fixed in 14.1.2.7); from 15.0.0, before 15.0.1.4 (fixed in 15.0.1.4); from 15.1.0, before 15.1.0.5 (fixed in 15.1.0.5)
• F5 BIG-IP Domain Name System: from 14.1.0, before 14.1.2.7 (fixed in 14.1.2.7); from 15.0.0, before 15.0.1.4 (fixed in 15.0.1.4); from 15.1.0, before 15.1.0.5 (fixed in 15.1.0.5)
• F5 BIG-IP Fraud Protection Service: from 14.1.0, before 14.1.2.7 (fixed in 14.1.2.7); from 15.0.0, before 15.0.1.4 (fixed in 15.0.1.4); from 15.1.0, before 15.1.0.5 (fixed in 15.1.0.5)
• F5 BIG-IP Global Traffic Manager: from 14.1.0, before 14.1.2.7 (fixed in 14.1.2.7); from 15.0.0, before 15.0.1.4 (fixed in 15.0.1.4); from 15.1.0, before 15.1.0.5 (fixed in 15.1.0.5)
• F5 BIG-IP Link Controller: from 14.1.0, before 14.1.2.7 (fixed in 14.1.2.7); from 15.0.0, before 15.0.1.4 (fixed in 15.0.1.4); from 15.1.0, before 15.1.0.5 (fixed in 15.1.0.5)
• F5 BIG-IP Local Traffic Manager: from 14.1.0, before 14.1.2.7 (fixed in 14.1.2.7); from 15.0.0, before 15.0.1.4 (fixed in 15.0.1.4); from 15.1.0, before 15.1.0.5 (fixed in 15.1.0.5)
• F5 BIG-IP Policy Enforcement Manager: from 14.1.0, before 14.1.2.7 (fixed in 14.1.2.7); from 15.0.0, before 15.0.1.4 (fixed in 15.0.1.4); from 15.1.0, before 15.1.0.5 (fixed in 15.1.0.5)

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