CVE-2025-20045

What it is

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.

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of service disruption.

Exploit odds

0.4% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2025-02-05 18:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 08:40 UTC Last updatedMost recent change to the record

Details

Published

2025-02-05 18:15 UTC

Last modified

2026-06-17 08:40 UTC

Exploit probability

0.4% · EPSS, next 30 days

Weakness

CWE-476 · NULL pointer dereference

Record status

Analyzed

Affected

• f5 big-ip Access Policy Manager ≤ 15.1.10
• f5 big-ip Advanced Firewall Manager ≤ 15.1.10
• f5 big-ip Advanced Web Application Firewall ≤ 15.1.10
• f5 big-ip Analytics ≤ 15.1.10
• f5 big-ip Application Acceleration Manager ≤ 15.1.10
• f5 big-ip Application Security Manager ≤ 15.1.10
• f5 big-ip Application Visibility And Reporting ≤ 15.1.10
• f5 big-ip Automation Toolchain ≤ 15.1.10

Attack profile CVSS 4.0 · 8.7

Attack vector

Network

Complexity

Low

Attack requirements

None

Privileges needed

None

User interaction

None

Confidentiality

None

Integrity

None

Availability

High