CVE-2020-5923: F5 BIG-IP Access Policy Manager

Medium severity, CVSS 5.4. EPSS: 0.5% chance of exploitation in the next 30 days.

In BIG-IP versions 15.0.0-15.1.0.4, 14.1.0-14.1.2.6, 13.1.0-13.1.3.3, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.1 and BIG-IQ versions 5.4.0-7.0.0, Self-IP port-lockdown bypass via IPv6 link-local addresses.

Affected products

• F5 BIG-IP Access Policy Manager: from 11.6.1, before 11.6.5.2 (fixed in 11.6.5.2); from 12.1.0, before 12.1.5.2 (fixed in 12.1.5.2); from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.7 (fixed in 14.1.2.7); from 15.0.0, before 15.1.0.5 (fixed in 15.1.0.5)
• F5 BIG-IP Advanced Firewall Manager: from 11.6.1, before 11.6.5.2 (fixed in 11.6.5.2); from 12.1.0, before 12.1.5.2 (fixed in 12.1.5.2); from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.7 (fixed in 14.1.2.7); from 15.0.0, before 15.1.0.5 (fixed in 15.1.0.5)
• F5 BIG-IP Analytics: from 11.6.1, before 11.6.5.2 (fixed in 11.6.5.2); from 12.1.0, before 12.1.5.2 (fixed in 12.1.5.2); from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.7 (fixed in 14.1.2.7); from 15.0.0, before 15.1.0.5 (fixed in 15.1.0.5)
• F5 BIG-IP Application Acceleration Manager: from 11.6.1, before 11.6.5.2 (fixed in 11.6.5.2); from 12.1.0, before 12.1.5.2 (fixed in 12.1.5.2); from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.7 (fixed in 14.1.2.7); from 15.0.0, before 15.1.0.5 (fixed in 15.1.0.5)
• F5 BIG-IP Application Security Manager: from 11.6.1, before 11.6.5.2 (fixed in 11.6.5.2); from 12.1.0, before 12.1.5.2 (fixed in 12.1.5.2); from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.7 (fixed in 14.1.2.7); from 15.0.0, before 15.1.0.5 (fixed in 15.1.0.5)
• F5 BIG-IP Domain Name System: from 11.6.1, before 11.6.5.2 (fixed in 11.6.5.2); from 12.1.0, before 12.1.5.2 (fixed in 12.1.5.2); from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.7 (fixed in 14.1.2.7); from 15.0.0, before 15.1.0.5 (fixed in 15.1.0.5)
• F5 BIG-IP Fraud Protection Service: from 11.6.1, before 11.6.5.2 (fixed in 11.6.5.2); from 12.1.0, before 12.1.5.2 (fixed in 12.1.5.2); from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.7 (fixed in 14.1.2.7); from 15.0.0, before 15.1.0.5 (fixed in 15.1.0.5)
• F5 BIG-IP Global Traffic Manager: from 11.6.1, before 11.6.5.2 (fixed in 11.6.5.2); from 12.1.0, before 12.1.5.2 (fixed in 12.1.5.2); from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.7 (fixed in 14.1.2.7); from 15.0.0, before 15.1.0.5 (fixed in 15.1.0.5)
• F5 BIG-IP Link Controller: from 11.6.1, before 11.6.5.2 (fixed in 11.6.5.2); from 12.1.0, before 12.1.5.2 (fixed in 12.1.5.2); from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.7 (fixed in 14.1.2.7); from 15.0.0, before 15.1.0.5 (fixed in 15.1.0.5)
• F5 BIG-IP Local Traffic Manager: from 11.6.1, before 11.6.5.2 (fixed in 11.6.5.2); from 12.1.0, before 12.1.5.2 (fixed in 12.1.5.2); from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.7 (fixed in 14.1.2.7); from 15.0.0, before 15.1.0.5 (fixed in 15.1.0.5)
• F5 BIG-IP Policy Enforcement Manager: from 11.6.1, before 11.6.5.2 (fixed in 11.6.5.2); from 12.1.0, before 12.1.5.2 (fixed in 12.1.5.2); from 13.1.0, before 13.1.3.4 (fixed in 13.1.3.4); from 14.1.0, before 14.1.2.7 (fixed in 14.1.2.7); from 15.0.0, before 15.1.0.5 (fixed in 15.1.0.5)
• F5 BIG-IQ Centralized Management: from 6.0.0, up to and including 6.1.0; version 5.4.0 only; version 7.0.0 only

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