CVE-2025-61951: F5 BIG-IP Access Policy Manager

High severity, CVSS 7.5. EPSS: 0.2% chance of exploitation in the next 30 days.

Undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. This issue may occur when a Datagram Transport Layer Security (DTLS) 1.2 virtual server is enabled with a Server SSL profile that is configured with a certificate, key, and the SSL Sign Hash set to ANY, and the backend server is enabled with DTLS 1.2 and client authentication. 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 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only
F5 BIG-IP Advanced Firewall Manager: from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only
F5 BIG-IP Advanced Web Application Firewall: from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only
F5 BIG-IP Analytics: from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only
F5 BIG-IP Application Acceleration Manager: from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only
F5 BIG-IP Application Security Manager: from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only
F5 BIG-IP Application Visibility And Reporting: from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only
F5 BIG-IP Automation Toolchain: from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only
F5 BIG-IP Carrier-Grade Nat: from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only
F5 BIG-IP Container Ingress Services: from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only
F5 BIG-IP Ddos Hybrid Defender: from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only
F5 BIG-IP Domain Name System: from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only
F5 BIG-IP Edge Gateway: from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only
F5 BIG-IP Fraud Protection Service: from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only
F5 BIG-IP Global Traffic Manager: from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only
F5 BIG-IP Link Controller: from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only
F5 BIG-IP Local Traffic Manager: from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only
F5 BIG-IP Policy Enforcement Manager: from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only
F5 BIG-IP SSL Orchestrator: from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only
F5 BIG-IP Webaccelerator: from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only
F5 BIG-IP Websafe: from 16.1.0, before 16.1.6.1 (fixed in 16.1.6.1); from 17.1.0, before 17.1.3 (fixed in 17.1.3); version 17.5.0 only

Published 2025-10-15. Last modified 2026-10-08.