CVE-2025-55669: big-ip — Fix

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.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-672 CWE-672

Affected Products

Vendor	Product	Versions
f5	big-ip_application_security_manager	16.1.0 — 16.1.6
f5	big-ip_application_security_manager	17.1.0 — 17.1.2

References

Advisories & Patches

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

Frequently Asked Questions

What is CVE-2025-55669? +

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. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2025-55669? +

CVE-2025-55669 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-55669? +

CVE-2025-55669 affects products from f5, specifically: big-ip_application_security_manager. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-55669? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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