BIG-IP TMM Crash via Undisclosed Mirroring Requests (CVE-2025-41431)
CVE-2025-41431 Published on May 7, 2025
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.
Vulnerability Analysis
CVE-2025-41431 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.
Weakness Type
What is a Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2025-41431 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2025-41431
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Affected Versions
F5 BIG-IP:- Version 17.5.0 and below * is unaffected.
- Version 17.1.0 and below 17.1.2.2 is affected.
- Version 16.1.0 and below * is unaffected.
- Version 15.1.0 and below * is unaffected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.