CVE-2025-55669

High

Description

When the BIG-IP Advanced WAF and ASM security policy and a server-side HTTP/2 profile are configured on a 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.

SeverityHigh

CVSS7.5

Exploit probability—

Product

F5 Big-ip Application Security Manager

PublishedOct 15, 2025

First seenOct 15, 2025

Weakness typeCWE-672CWE-672

How to fix

Update

f5 big-ip_application_security_manager16.1.6 or later

Vendor advisories

my.f5.com/manage/s/article/K000150752

Affected products

Product	Affected versions	Fixed in
f5 big-ip_application_security_manager	16.1.0 ≤ v < 16.1.6, 17.1.0 ≤ v ≤ 17.1.2	16.1.6

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