CVE-2025-53521

F5 · Published October 15, 2025

9.8

CVSS v3.1

CRITICAL

CISA KEV — Federal agencies must patch by deadline

Actively exploited in the wild

Patch availableGet patch

Description

When a BIG-IP APM access policy is configured on a virtual server, specific malicious traffic can lead to Remote Code Execution (RCE). Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Affected Products

BIG IP Access Policy Manager < 15.1.10.8
BIG IP Access Policy Manager < 16.1.6.1
BIG IP Access Policy Manager < 17.1.3
BIG IP Access Policy Manager < 17.5.1.3

CVSS Vector

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