CVE-2021-23037: F5 BIG-IP Access Policy Manager

Critical severity, CVSS 9.6. EPSS: 0.8% chance of exploitation in the next 30 days.

On all versions of 16.1.x, 16.0.x, 15.1.x, 14.1.x, 13.1.x, 12.1.x, and 11.6.x, a reflected cross-site scripting (XSS) vulnerability exists in an undisclosed page of the BIG-IP Configuration utility that allows an attacker to execute JavaScript in the context of the currently logged-in user. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected products

  • F5 BIG-IP Access Policy Manager: from 11.6.0, up to and including 11.6.5; from 12.1.0, up to and including 12.1.6; from 13.1.0, up to and including 13.1.4; from 14.1.0, up to and including 14.1.4; from 15.1.0, up to and including 15.1.3; from 16.0.0, up to and including 16.1.0
  • F5 BIG-IP Advanced Firewall Manager: from 11.6.0, up to and including 11.6.5; from 12.1.0, up to and including 12.1.6; from 13.1.0, up to and including 13.1.4; from 14.1.0, up to and including 14.1.4; from 15.1.0, up to and including 15.1.3; from 16.0.0, up to and including 16.1.0
  • F5 BIG-IP Analytics: from 11.6.0, up to and including 11.6.5; from 12.1.0, up to and including 12.1.6; from 13.1.0, up to and including 13.1.4; from 14.1.0, up to and including 14.1.4; from 15.1.0, up to and including 15.1.3; from 16.0.0, up to and including 16.1.0
  • F5 BIG-IP Application Acceleration Manager: from 11.6.0, up to and including 11.6.5; from 12.1.0, up to and including 12.1.6; from 13.1.0, up to and including 13.1.4; from 14.1.0, up to and including 14.1.4; from 15.1.0, up to and including 15.1.3; from 16.0.0, up to and including 16.1.0
  • F5 BIG-IP Application Security Manager: from 11.6.0, up to and including 11.6.5; from 12.1.0, up to and including 12.1.6; from 13.1.0, up to and including 13.1.4; from 14.1.0, up to and including 14.1.4; from 15.1.0, up to and including 15.1.3; from 16.0.0, up to and including 16.1.0
  • F5 BIG-IP Domain Name System: from 11.6.0, up to and including 11.6.5; from 12.1.0, up to and including 12.1.6; from 13.1.0, up to and including 13.1.4; from 14.1.0, up to and including 14.1.4; from 15.1.0, up to and including 15.1.3; from 16.0.0, up to and including 16.1.0
  • F5 BIG-IP Fraud Protection Service: from 11.6.0, up to and including 11.6.5; from 12.1.0, up to and including 12.1.6; from 13.1.0, up to and including 13.1.4; from 14.1.0, up to and including 14.1.4; from 15.1.0, up to and including 15.1.3; from 16.0.0, up to and including 16.1.0
  • F5 BIG-IP Global Traffic Manager: from 11.6.0, up to and including 11.6.5; from 12.1.0, up to and including 12.1.6; from 13.1.0, up to and including 13.1.4; from 14.1.0, up to and including 14.1.4; from 15.1.0, up to and including 15.1.3; from 16.0.0, up to and including 16.1.0
  • F5 BIG-IP Link Controller: from 11.6.0, up to and including 11.6.5; from 12.1.0, up to and including 12.1.6; from 13.1.0, up to and including 13.1.4; from 14.1.0, up to and including 14.1.4; from 15.1.0, up to and including 15.1.3; from 16.0.0, up to and including 16.1.0
  • F5 BIG-IP Local Traffic Manager: from 11.6.0, up to and including 11.6.5; from 12.1.0, up to and including 12.1.6; from 13.1.0, up to and including 13.1.4; from 14.1.0, up to and including 14.1.4; from 15.1.0, up to and including 15.1.3; from 16.0.0, up to and including 16.1.0
  • F5 BIG-IP Policy Enforcement Manager: from 11.6.0, up to and including 11.6.5; from 12.1.0, up to and including 12.1.6; from 13.1.0, up to and including 13.1.4; from 14.1.0, up to and including 14.1.4; from 15.1.0, up to and including 15.1.3; from 16.0.0, up to and including 16.1.0

Published 2021-09-14. Last modified 2026-06-17.