CVE-2025-41431: F5 BIG-IP Access Policy Manager

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

When connection mirroring is configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate in the standby BIG-IP systems in a traffic group. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected products

• F5 BIG-IP Access Policy Manager: version 17.1.2 only
• F5 BIG-IP Advanced Firewall Manager: version 17.1.2 only
• F5 BIG-IP Analytics: version 17.1.2 only
• F5 BIG-IP Application Acceleration Manager: version 17.1.2 only
• F5 BIG-IP Application Security Manager: version 17.1.2 only
• F5 BIG-IP Domain Name System: version 17.1.2 only
• F5 BIG-IP Fraud Protection Service: version 17.1.2 only
• F5 BIG-IP Global Traffic Manager: version 17.1.2 only
• F5 BIG-IP Link Controller: version 17.1.2 only
• F5 BIG-IP Local Traffic Manager: version 17.1.2 only
• F5 BIG-IP Policy Enforcement Manager: version 17.1.2 only

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