CVE-2024-21771

F5 AFM Signature Matching Vulnerability

Published Feb 14, 2024 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
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

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2024-19385 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
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared F5
F5 big-ip Advanced Firewall Manager
CPEs cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:17.1.0:*:*:*:*:*:*:*
Vendors & Products F5
F5 big-ip Advanced Firewall Manager
Weaknesses

Sources

Status
PUBLISHED
Assigner
f5
Published
Updated
Mar 24, 2025, 7:08 PM
Reserved
Feb 1, 2024, 10:13 PM
Status
Analyzed
Published
Feb 14, 2024, 5:15 PM
Modified
Jun 17, 2026, 7:10 AM