CVE-2025-53856 - CVE House
Back to Database
Status published High CVE-2025-53856

TMM vulnerability

Vulnerability Description

When a virtual server, network address translation (NAT) object, or secure network address translation (SNAT) object uses the embedded Packet Velocity Acceleration (ePVA) feature, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate.  To determine which BIG-IP platforms have an ePVA chip refer to K12837: Overview of the ePVA feature https://my.f5.com/manage/s/article/K12837 .  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.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-53856

Credits & Attribution

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

  • F5

References

More from F5

View All →
CVE-2025-61990
TMM vulnerability
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-705

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.