CVE-2025-55669 - CVE House
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Status published High CVE-2025-55669

BIG-IP HTTP/2 vulnerability

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • F5

References

More from F5

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CVE-2025-61990
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High 8.7
CVE-2025-61974
BIG-IP SSL/TLS vulnerability
High 8.7
CVE-2025-61960
BIG-IP APM portal access vulnerability
High 8.7
CVE-2025-61958
BIG-IP TMSH vulnerability
High 8.5
CVE-2025-61955
F5OS vulnerability
High 8.5

Affected Vendor

Affected Software

BIG-IP
Vulnerable Versions:
17.5.0, 17.1.0, 16.1.0, 15.1.0

Timeline

Official Publish: October 15th, 2025
Last Modified: February 26th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

CWE-672

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.