CVE-2021-22975: F5 BIG-IP Access Policy Manager

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

On BIG-IP version 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, and 14.1.x before 14.1.3.1, under some circumstances, Traffic Management Microkernel (TMM) may restart on the BIG-IP system while passing large bursts of traffic. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

Affected products

  • F5 BIG-IP Access Policy Manager: from 14.1.0, before 14.1.3.1 (fixed in 14.1.3.1); 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 14.1.0, before 14.1.3.1 (fixed in 14.1.3.1); 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 14.1.0, before 14.1.3.1 (fixed in 14.1.3.1); 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 14.1.0, before 14.1.3.1 (fixed in 14.1.3.1); 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 14.1.0, before 14.1.3.1 (fixed in 14.1.3.1); 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 14.1.0, before 14.1.3.1 (fixed in 14.1.3.1); 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 14.1.0, before 14.1.3.1 (fixed in 14.1.3.1); 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 14.1.0, before 14.1.3.1 (fixed in 14.1.3.1); 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 14.1.0, before 14.1.3.1 (fixed in 14.1.3.1); 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 14.1.0, before 14.1.3.1 (fixed in 14.1.3.1); 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 14.1.0, before 14.1.3.1 (fixed in 14.1.3.1); 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 14.1.0, before 14.1.3.1 (fixed in 14.1.3.1); 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 14.1.0, before 14.1.3.1 (fixed in 14.1.3.1); 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 SSL Orchestrator: from 14.1.0, before 14.1.3.1 (fixed in 14.1.3.1); 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 2021-02-12. Last modified 2026-06-17.