CVE-2026-41956 BIG-IP TMM Vulnerability

High 8.7 Published 13 May 2026 Updated 13 May 2026

Attackers can cause a denial of service by sending undisclosed requests to a UDP virtual server with a classification profile configured.

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-2026-41956?

CVE-2026-41956 is a high-severity memory corruption vulnerability in F5 Big-Ip Access Policy Manager, published on 13 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

When a classification profile is configured on a UDP virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Weakness: CWE-121

Which versions are affected by CVE-2026-41956?

It affects 23 products.

Products include F5 Big-Ip Access Policy Manager, F5 Big-Ip Advanced Firewall Manager, F5 Big-Ip Advanced Web Application Firewall, F5 Big-Ip Analytics, F5 Big-Ip Application Acceleration Manager, F5 Big-Ip Application Security Manager and 17 more.

How do I fix CVE-2026-41956?

No fix has been published for CVE-2026-41956 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-2026-41956 being exploited?

There is no known exploitation of CVE-2026-41956 in the wild and no public exploit code.

All F5 Big-Ip Access Policy Manager vulnerabilities

Sources

Also known as GHSA-7vhg-fvrv-7x3q.