CVE-2024-21771 HIGH

CVE-2024-21771: F5 AFM Signature Matching Vulnerability

Vendor F5
Product BIG-IP
Weakness CWE-770 · Uncontrolled resource consumption
Published February 14, 2024
Last update March 24, 2025
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

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

Key dates

02Disclosure timeline

February 14, 2024 CVE published
March 24, 2025 Record updated