CVE-2020-5948: F5 BIG-IP Access Policy Manager

Critical severity, CVSS 9.6. EPSS: 1% chance of exploitation in the next 30 days.

On BIG-IP versions 16.0.0-16.0.0.1, 15.1.0-15.1.0.5, 14.1.0-14.1.2.7, 13.1.0-13.1.3.4, 12.1.0-12.1.5.2, and 11.6.1-11.6.5.2, undisclosed endpoints in iControl REST allow for a reflected XSS attack, which could lead to a complete compromise of the BIG-IP system if the victim user is granted the admin role.

Affected products

  • F5 BIG-IP Access Policy Manager: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.1.0, before 14.1.2.8 (fixed in 14.1.2.8); from 15.0.0, before 15.1.1 (fixed in 15.1.1); version 16.0.0 only
  • F5 BIG-IP Advanced Firewall Manager: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.1.0, before 14.1.2.8 (fixed in 14.1.2.8); from 15.0.0, before 15.1.1 (fixed in 15.1.1); version 16.0.0 only
  • F5 BIG-IP Analytics: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.1.0, before 14.1.2.8 (fixed in 14.1.2.8); from 15.0.0, before 15.1.1 (fixed in 15.1.1); version 16.0.0 only
  • F5 BIG-IP Application Acceleration Manager: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.1.0, before 14.1.2.8 (fixed in 14.1.2.8); from 15.0.0, before 15.1.1 (fixed in 15.1.1); version 16.0.0 only
  • F5 BIG-IP Application Security Manager: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.1.0, before 14.1.2.8 (fixed in 14.1.2.8); from 15.0.0, before 15.1.1 (fixed in 15.1.1); version 16.0.0 only
  • F5 BIG-IP Domain Name System: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.1.0, before 14.1.2.8 (fixed in 14.1.2.8); from 15.0.0, before 15.1.1 (fixed in 15.1.1); version 16.0.0 only
  • F5 BIG-IP Fraud Protection Service: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.1.0, before 14.1.2.8 (fixed in 14.1.2.8); from 15.0.0, before 15.1.1 (fixed in 15.1.1); version 16.0.0 only
  • F5 BIG-IP Global Traffic Manager: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.1.0, before 14.1.2.8 (fixed in 14.1.2.8); from 15.0.0, before 15.1.1 (fixed in 15.1.1); version 16.0.0 only
  • F5 BIG-IP Link Controller: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.1.0, before 14.1.2.8 (fixed in 14.1.2.8); from 15.0.0, before 15.1.1 (fixed in 15.1.1); version 16.0.0 only
  • F5 BIG-IP Local Traffic Manager: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.1.0, before 14.1.2.8 (fixed in 14.1.2.8); from 15.0.0, before 15.1.1 (fixed in 15.1.1); version 16.0.0 only
  • F5 BIG-IP Policy Enforcement Manager: from 13.1.0, before 13.1.3.5 (fixed in 13.1.3.5); from 14.1.0, before 14.1.2.8 (fixed in 14.1.2.8); from 15.0.0, before 15.1.1 (fixed in 15.1.1); version 16.0.0 only

Published 2020-12-11. Last modified 2026-06-17.