CVE-2025-41431: TMM Vulnerability

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-05-07 · updated 2026-06-17
Weakness: CWE-787

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.

Affected products

F5 BIG-IP APM: 17.1.2
BIG-IP: 17.1.2
F5 Big-Ip Analytics: 17.1.2
F5 Networks, Inc. BIG-IP (AAM): 17.1.2
BIG-IP ASM: 17.1.2
F5 BIG-IP DNS: 17.1.2
F5 Big-Ip Fraud Protection Service: 17.1.2
F5 Big-Ip Global Traffic Manager: 17.1.2
F5 Big-Ip Link Controller: 17.1.2
F5 BIG-IP (LTM): 17.1.2
F5 Networks, Inc. BIG-IP (PEM): 17.1.2

References

https://my.f5.com/manage/s/article/K000150668

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