CVE-2021-22992: F5 BIG-IP Access Policy Manager

Critical severity, CVSS 9.8. EPSS: 72.7% chance of exploitation in the next 30 days.

On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, 12.1.x before 12.1.5.3, and 11.6.x before 11.6.5.3, a malicious HTTP response to an Advanced WAF/BIG-IP ASM virtual server with Login Page configured in its policy may trigger a buffer overflow, resulting in a DoS attack. In certain situations, it may allow remote code execution (RCE), leading to complete system compromise. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

Affected products

  • F5 BIG-IP Access Policy Manager: from 11.6.1, before 11.6.5.3 (fixed in 11.6.5.3); from 12.1.0, before 12.1.5.3 (fixed in 12.1.5.3); from 13.1.0, before 13.1.3.6 (fixed in 13.1.3.6); from 14.1.0, before 14.1.4 (fixed in 14.1.4); from 15.1.0, before 15.1.2.1 (fixed in 15.1.2.1); from 16.0.0, before 16.0.1.1 (fixed in 16.0.1.1)
  • F5 BIG-IP Advanced Firewall Manager: from 11.6.1, before 11.6.5.3 (fixed in 11.6.5.3); from 12.1.0, before 12.1.5.3 (fixed in 12.1.5.3); from 13.1.0, before 13.1.3.6 (fixed in 13.1.3.6); from 14.1.0, before 14.1.4 (fixed in 14.1.4); from 15.1.0, before 15.1.2.1 (fixed in 15.1.2.1); from 16.0.0, before 16.0.1.1 (fixed in 16.0.1.1)
  • F5 BIG-IP Advanced Web Application Firewall: from 11.6.1, before 11.6.5.3 (fixed in 11.6.5.3); from 12.1.0, before 12.1.5.3 (fixed in 12.1.5.3); from 13.1.0, before 13.1.3.6 (fixed in 13.1.3.6); from 14.1.0, before 14.1.4 (fixed in 14.1.4); from 15.1.0, before 15.1.2.1 (fixed in 15.1.2.1); from 16.0.0, before 16.0.1.1 (fixed in 16.0.1.1)
  • F5 BIG-IP Analytics: from 11.6.1, before 11.6.5.3 (fixed in 11.6.5.3); from 12.1.0, before 12.1.5.3 (fixed in 12.1.5.3); from 13.1.0, before 13.1.3.6 (fixed in 13.1.3.6); from 14.1.0, before 14.1.4 (fixed in 14.1.4); from 15.1.0, before 15.1.2.1 (fixed in 15.1.2.1); from 16.0.0, before 16.0.1.1 (fixed in 16.0.1.1)
  • F5 BIG-IP Application Acceleration Manager: from 11.6.1, before 11.6.5.3 (fixed in 11.6.5.3); from 12.1.0, before 12.1.5.3 (fixed in 12.1.5.3); from 13.1.0, before 13.1.3.6 (fixed in 13.1.3.6); from 14.1.0, before 14.1.4 (fixed in 14.1.4); from 15.1.0, before 15.1.2.1 (fixed in 15.1.2.1); from 16.0.0, before 16.0.1.1 (fixed in 16.0.1.1)
  • F5 BIG-IP Application Security Manager: from 11.6.1, before 11.6.5.3 (fixed in 11.6.5.3); from 12.1.0, before 12.1.5.3 (fixed in 12.1.5.3); from 13.1.0, before 13.1.3.6 (fixed in 13.1.3.6); from 14.1.0, before 14.1.4 (fixed in 14.1.4); from 15.1.0, before 15.1.2.1 (fixed in 15.1.2.1); from 16.0.0, before 16.0.1.1 (fixed in 16.0.1.1)
  • F5 BIG-IP Ddos Hybrid Defender: from 11.6.1, before 11.6.5.3 (fixed in 11.6.5.3); from 12.1.0, before 12.1.5.3 (fixed in 12.1.5.3); from 13.1.0, before 13.1.3.6 (fixed in 13.1.3.6); from 14.1.0, before 14.1.4 (fixed in 14.1.4); from 15.1.0, before 15.1.2.1 (fixed in 15.1.2.1); from 16.0.0, before 16.0.1.1 (fixed in 16.0.1.1)
  • F5 BIG-IP Domain Name System: from 11.6.1, before 11.6.5.3 (fixed in 11.6.5.3); from 12.1.0, before 12.1.5.3 (fixed in 12.1.5.3); from 13.1.0, before 13.1.3.6 (fixed in 13.1.3.6); from 14.1.0, before 14.1.4 (fixed in 14.1.4); from 15.1.0, before 15.1.2.1 (fixed in 15.1.2.1); from 16.0.0, before 16.0.1.1 (fixed in 16.0.1.1)
  • F5 BIG-IP Fraud Protection Service: from 11.6.1, before 11.6.5.3 (fixed in 11.6.5.3); from 12.1.0, before 12.1.5.3 (fixed in 12.1.5.3); from 13.1.0, before 13.1.3.6 (fixed in 13.1.3.6); from 14.1.0, before 14.1.4 (fixed in 14.1.4); from 15.1.0, before 15.1.2.1 (fixed in 15.1.2.1); from 16.0.0, before 16.0.1.1 (fixed in 16.0.1.1)
  • F5 BIG-IP Global Traffic Manager: from 11.6.1, before 11.6.5.3 (fixed in 11.6.5.3); from 12.1.0, before 12.1.5.3 (fixed in 12.1.5.3); from 13.1.0, before 13.1.3.6 (fixed in 13.1.3.6); from 14.1.0, before 14.1.4 (fixed in 14.1.4); from 15.1.0, before 15.1.2.1 (fixed in 15.1.2.1); from 16.0.0, before 16.0.1.1 (fixed in 16.0.1.1)
  • F5 BIG-IP Link Controller: from 11.6.1, before 11.6.5.3 (fixed in 11.6.5.3); from 12.1.0, before 12.1.5.3 (fixed in 12.1.5.3); from 13.1.0, before 13.1.3.6 (fixed in 13.1.3.6); from 14.1.0, before 14.1.4 (fixed in 14.1.4); from 15.1.0, before 15.1.2.1 (fixed in 15.1.2.1); from 16.0.0, before 16.0.1.1 (fixed in 16.0.1.1)
  • F5 BIG-IP Local Traffic Manager: from 11.6.1, before 11.6.5.3 (fixed in 11.6.5.3); from 12.1.0, before 12.1.5.3 (fixed in 12.1.5.3); from 13.1.0, before 13.1.3.6 (fixed in 13.1.3.6); from 14.1.0, before 14.1.4 (fixed in 14.1.4); from 15.1.0, before 15.1.2.1 (fixed in 15.1.2.1); from 16.0.0, before 16.0.1.1 (fixed in 16.0.1.1)
  • F5 BIG-IP Policy Enforcement Manager: from 11.6.1, before 11.6.5.3 (fixed in 11.6.5.3); from 12.1.0, before 12.1.5.3 (fixed in 12.1.5.3); from 13.1.0, before 13.1.3.6 (fixed in 13.1.3.6); from 14.1.0, before 14.1.4 (fixed in 14.1.4); from 15.1.0, before 15.1.2.1 (fixed in 15.1.2.1); from 16.0.0, before 16.0.1.1 (fixed in 16.0.1.1)
  • F5 SSL Orchestrator: from 11.6.1, before 11.6.5.3 (fixed in 11.6.5.3); from 12.1.0, before 12.1.5.3 (fixed in 12.1.5.3); from 13.1.0, before 13.1.3.6 (fixed in 13.1.3.6); from 14.1.0, before 14.1.4 (fixed in 14.1.4); from 15.1.0, before 15.1.2.1 (fixed in 15.1.2.1); from 16.0.0, before 16.0.1.1 (fixed in 16.0.1.1)

Published 2021-03-31. Last modified 2026-06-17.