CVE-2025-41431 TMM Vulnerability

High 8.7 Published 7 May 2025 Updated 8 May 2025

Attackers can cause denial of service on standby BIG-IP systems by sending undisclosed requests when connection mirroring is enabled.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-41431?

CVE-2025-41431 is a high-severity memory corruption vulnerability in F5 Big-Ip Access Policy Manager, published on 7 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-787

Which versions are affected by CVE-2025-41431?

It affects 11 products.

Products include F5 Big-Ip Access Policy Manager, F5 Big-Ip Advanced Firewall Manager, F5 Big-Ip Analytics, F5 Big-Ip Application Acceleration Manager, F5 Big-Ip Application Security Manager, F5 Big-Ip Domain Name System and 5 more.

How do I fix CVE-2025-41431?

No fix has been published for CVE-2025-41431 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2025-41431 being exploited?

There is no known exploitation of CVE-2025-41431 in the wild and no public exploit code.

All F5 Big-Ip Access Policy Manager vulnerabilities

Sources

Also known as GHSA-fgm2-7ff4-mv6h.