BIG-IP
CVE-2024-21771: F5 AFM Signature Matching Vulnerability
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.
Published
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| BIG-IP 17.1 | 17.1.1 or later |
| BIG-IP 16.1 | 16.1.4 or later |
| BIG-IP 15.1 | 15.1.9 or later |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
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
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 12 Oct 2026.