CVE-2025-20045: BIG-IP SIP MRF Vulnerability
When SIP session Application Level Gateway mode (ALG) profile with Passthru Mode enabled and SIP router ALG profile are configured on a Message Routing type virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Other sources
When the Session Initiation Protocol (SIP) application layer gateway (ALG) profile with Passthru Mode enabled and the SIP router ALG profile are configured on a Message Routing type virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate.
— F5
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-20045?
CVE-2025-20045 is classified as a medium severity vulnerability.
How do I fix CVE-2025-20045?
To remediate CVE-2025-20045, upgrade to F5 BIG-IP version 17.1.2, 16.1.5, or ensure you are using the recommended patches for affected versions.
What products are affected by CVE-2025-20045?
The affected products are F5 BIG-IP versions between 17.1.0 and 17.1.1, 16.1.0 and 16.1.4, and 15.1.0 and 15.1.10.
What specific configuration triggers CVE-2025-20045?
CVE-2025-20045 is triggered when the Session Initiation Protocol (SIP) ALG profile is enabled with Passthru Mode on a Message Routing type virtual server.
What potential impact does CVE-2025-20045 have on my system?
CVE-2025-20045 can cause the Traffic Management Microkernel (TMM) to terminate, potentially leading to service disruption.