CVE-2024-21771 - CVE House
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Status published High CVE-2024-21771

F5 AFM Signature Matching Vulnerability

Vulnerability Description

For unspecified traffic patterns, BIG-IP AFM IPS engine may spend an excessive amount of time matching the traffic against signatures, resulting in Traffic Management Microkernel (TMM) restarting and traffic disruption.  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

Affected Vendor

Affected Software

BIG-IP
Vulnerable Versions:
17.1.0, 16.1.0, 15.1.0

Timeline

Official Publish: February 14th, 2024
Last Modified: March 24th, 2025
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)