CVE-2025-36557: F5 BIG-IP Access Policy Manager

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

When an HTTP profile with the Enforce RFC Compliance option is configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected products

  • F5 BIG-IP Access Policy Manager: from 16.1.0, before 16.1.5 (fixed in 16.1.5); from 17.1.0, before 17.1.2 (fixed in 17.1.2)
  • F5 BIG-IP Advanced Firewall Manager: from 16.1.0, before 16.1.5 (fixed in 16.1.5); from 17.1.0, before 17.1.2 (fixed in 17.1.2)
  • F5 BIG-IP Analytics: from 16.1.0, before 16.1.5 (fixed in 16.1.5); from 17.1.0, before 17.1.2 (fixed in 17.1.2)
  • F5 BIG-IP Application Acceleration Manager: from 16.1.0, before 16.1.5 (fixed in 16.1.5); from 17.1.0, before 17.1.2 (fixed in 17.1.2)
  • F5 BIG-IP Application Security Manager: from 16.1.0, before 16.1.5 (fixed in 16.1.5); from 17.1.0, before 17.1.2 (fixed in 17.1.2)
  • F5 BIG-IP Domain Name System: from 16.1.0, before 16.1.5 (fixed in 16.1.5); from 17.1.0, before 17.1.2 (fixed in 17.1.2)
  • F5 BIG-IP Fraud Protection Service: from 16.1.0, before 16.1.5 (fixed in 16.1.5); from 17.1.0, before 17.1.2 (fixed in 17.1.2)
  • F5 BIG-IP Global Traffic Manager: from 16.1.0, before 16.1.5 (fixed in 16.1.5); from 17.1.0, before 17.1.2 (fixed in 17.1.2)
  • F5 BIG-IP Link Controller: from 16.1.0, before 16.1.5 (fixed in 16.1.5); from 17.1.0, before 17.1.2 (fixed in 17.1.2)
  • F5 BIG-IP Local Traffic Manager: from 16.1.0, before 16.1.5 (fixed in 16.1.5); from 17.1.0, before 17.1.2 (fixed in 17.1.2)
  • F5 BIG-IP Next Cloud-Native Network Functions: from 1.1.0, before 1.4.0 (fixed in 1.4.0)
  • F5 BIG-IP Next Service Proxy For Kubernetes: from 1.7.0, before 1.7.9 (fixed in 1.7.9); from 1.8.0, up to and including 1.9.2
  • F5 BIG-IP Policy Enforcement Manager: from 16.1.0, before 16.1.5 (fixed in 16.1.5); from 17.1.0, before 17.1.2 (fixed in 17.1.2)

Published 2025-05-07. Last modified 2026-06-17.