CVE-2023-40534: F5 BIG-IP Access Policy Manager

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

When a client-side HTTP/2 profile and the HTTP MRF Router option are enabled for a virtual server, and an iRule using the HTTP_REQUEST event or Local Traffic Policy are associated with the virtual server, undisclosed requests can cause 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 16.1.4.1 (fixed in 16.1.4.1); version 17.1.0 only
F5 BIG-IP Advanced Firewall Manager: from 16.1.0, before 16.1.4.1 (fixed in 16.1.4.1); version 17.1.0 only
F5 BIG-IP Advanced Web Application Firewall: from 16.1.0, before 16.1.4.1 (fixed in 16.1.4.1); version 17.1.0 only
F5 BIG-IP Analytics: from 16.1.0, before 16.1.4.1 (fixed in 16.1.4.1); version 17.1.0 only
F5 BIG-IP Application Acceleration Manager: from 16.1.0, before 16.1.4.1 (fixed in 16.1.4.1); version 17.1.0 only
F5 BIG-IP Application Security Manager: from 16.1.0, before 16.1.4.1 (fixed in 16.1.4.1); version 17.1.0 only
F5 BIG-IP Application Visibility And Reporting: from 16.1.0, before 16.1.4.1 (fixed in 16.1.4.1); version 17.1.0 only
F5 BIG-IP Carrier-Grade Nat: from 16.1.0, before 16.1.4.1 (fixed in 16.1.4.1); version 17.1.0 only
F5 BIG-IP Ddos Hybrid Defender: from 16.1.0, before 16.1.4.1 (fixed in 16.1.4.1); version 17.1.0 only
F5 BIG-IP Domain Name System: from 16.1.0, before 16.1.4.1 (fixed in 16.1.4.1); version 17.1.0 only
F5 BIG-IP Edge Gateway: from 16.1.0, before 16.1.4.1 (fixed in 16.1.4.1); version 17.1.0 only
F5 BIG-IP Fraud Protection Service: from 16.1.0, before 16.1.4.1 (fixed in 16.1.4.1); version 17.1.0 only
F5 BIG-IP Global Traffic Manager: from 16.1.0, before 16.1.4.1 (fixed in 16.1.4.1); version 17.1.0 only
F5 BIG-IP Link Controller: from 16.1.0, before 16.1.4.1 (fixed in 16.1.4.1); version 17.1.0 only
F5 BIG-IP Local Traffic Manager: from 16.1.0, before 16.1.4.1 (fixed in 16.1.4.1); version 17.1.0 only
F5 BIG-IP Next Service Proxy For Kubernetes: from 1.6.0, up to and including 1.8.2
F5 BIG-IP Policy Enforcement Manager: from 16.1.0, before 16.1.4.1 (fixed in 16.1.4.1); version 17.1.0 only
F5 BIG-IP SSL Orchestrator: from 16.1.0, before 16.1.4.1 (fixed in 16.1.4.1); version 17.1.0 only
F5 BIG-IP Webaccelerator: from 16.1.0, before 16.1.4.1 (fixed in 16.1.4.1); version 17.1.0 only
F5 BIG-IP Websafe: from 16.1.0, before 16.1.4.1 (fixed in 16.1.4.1); version 17.1.0 only

Published 2023-10-10. Last modified 2026-06-17.