CVE-2026-41953: F5 BIG-IP Access Policy Manager

High severity, CVSS 8.7. EPSS: 0.4% chance of exploitation in the next 30 days.

A vulnerability exists in BIG-IP systems where a highly privileged, authenticated attacker with at least the Resource Administrator role can modify configuration objects resulting in privilege escalation.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected products

  • F5 BIG-IP Access Policy Manager: from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; from 16.1.0, up to and including 16.1.6; version 21.0.0 only
  • F5 BIG-IP Advanced Firewall Manager: from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; from 16.1.0, up to and including 16.1.6; version 21.0.0 only
  • F5 BIG-IP Advanced Web Application Firewall: from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; from 16.1.0, up to and including 16.1.6; version 21.0.0 only
  • F5 BIG-IP Analytics: from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; from 16.1.0, up to and including 16.1.6; version 21.0.0 only
  • F5 BIG-IP Application Acceleration Manager: from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; from 16.1.0, up to and including 16.1.6; version 21.0.0 only
  • F5 BIG-IP Application Security Manager: from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; from 16.1.0, up to and including 16.1.6; version 21.0.0 only
  • F5 BIG-IP Application Visibility And Reporting: from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; from 16.1.0, up to and including 16.1.6; version 21.0.0 only
  • F5 BIG-IP Automation Toolchain: from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; from 16.1.0, up to and including 16.1.6; version 21.0.0 only
  • F5 BIG-IP Carrier-Grade Nat: from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; from 16.1.0, up to and including 16.1.6; version 21.0.0 only
  • F5 BIG-IP Container Ingress Services: from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; from 16.1.0, up to and including 16.1.6; version 21.0.0 only
  • F5 BIG-IP Ddos Hybrid Defender: from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; from 16.1.0, up to and including 16.1.6; version 21.0.0 only
  • F5 BIG-IP Domain Name System: from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; from 16.1.0, up to and including 16.1.6; version 21.0.0 only
  • F5 BIG-IP Edge Gateway: from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; from 16.1.0, up to and including 16.1.6; version 21.0.0 only
  • F5 BIG-IP Fraud Protection Service: from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; from 16.1.0, up to and including 16.1.6; version 21.0.0 only
  • F5 BIG-IP Global Traffic Manager: from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; from 16.1.0, up to and including 16.1.6; version 21.0.0 only
  • F5 BIG-IP Link Controller: from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; from 16.1.0, up to and including 16.1.6; version 21.0.0 only
  • F5 BIG-IP Local Traffic Manager: from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; from 16.1.0, up to and including 16.1.6; version 21.0.0 only
  • F5 BIG-IP Policy Enforcement Manager: from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; from 16.1.0, up to and including 16.1.6; version 21.0.0 only
  • F5 BIG-IP SSL Orchestrator: from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; from 16.1.0, up to and including 16.1.6; version 21.0.0 only
  • F5 BIG-IP Webaccelerator: from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; from 16.1.0, up to and including 16.1.6; version 21.0.0 only
  • F5 BIG-IP Websafe: from 17.1.0, up to and including 17.1.3; from 17.5.0, up to and including 17.5.1; from 16.1.0, up to and including 16.1.6; version 21.0.0 only

Published 2026-05-13. Last modified 2026-06-24.