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TI-2024-14455 Aliases CVE-2024-21771GHSA-8gwr-pghr-44v9

F5 AFM Signature Matching Vulnerability

Priority LOW 39CWE-770Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-770.

Summary

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00515 44th percentileScored 2026-11-07
Fix Fixed BIG-IP (F5): 17.1.1, 16.1.4, 15.1.9

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
F5BIG-IP17.1.0 to before 17.1.1; 16.1.0 to before 16.1.4; 15.1.0 to before 15.1.917.1.1, 16.1.4, 15.1.9Patch availableCNA
  • BIG-IP VendorF5 Affected 17.1.0 to before 17.1.1; 16.1.0 to before 16.1.4; 15.1.0 to before 15.1.9 Fixed in 17.1.1, 16.1.4, 15.1.9 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:*15.1.0 to before 15.1.9; 16.1.0 to before 16.1.4VulnerableF5
cpe:2.3:a:f5:big-ip_advanced_firewall_manager:17.1.0:*:*:*:*:*:*:*17.1.0VulnerableF5
  • cpe:2.3:a:f5:big-ip_advanced_firewall_manager:*:*:*:*:*:*:*:* Versions 15.1.0 to before 15.1.9; 16.1.0 to before 16.1.4 Vulnerable ·F5
  • cpe:2.3:a:f5:big-ip_advanced_firewall_manager:17.1.0:*:*:*:*:*:*:* Versions 17.1.0 Vulnerable ·F5

Remediation

  • Fix · CNA BIG-IP (F5) Fixed in 17.1.1, 16.1.4, 15.1.9

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    F5 BIG-IP 15.1.9, 16.1.4, 17.1.1

    7 records Highest priority Priority MEDIUM 1 MEDIUM, 6 LOW

    Other records, highest priority first

    • TI-2024-14702 Appliance mode iControl REST vulnerabilityPriority MEDIUM 41
    • TI-2024-15417 BIG-IP HTTP/2 vulnerabilityPriority LOW 39
    • TI-2024-14964 BIG-IP iControl REST API VulnerabilityPriority LOW 34
    Show all 7 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-21771
  2. 2026-10-03 Alias added: GHSA-8gwr-pghr-44v9

References

Advisory 1

  • TI-2023-25230 BIG-IP Configuration utility unauthenticated remote code execution vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2022-01269 Missing authentication in F5 BIG-IP KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-05850 Memory corruption in BIG-IP KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-05845 Server-side request forgery in BIG-IP; BIG-IQ KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-04820 Path traversal in BIG-IP KEVCVSS 3.1CRITICAL 9.8
  • TI-2014-05975 GNU Bash through 4.3 bash43-025 processes trailing strings after certain malformed… KEVCVSS 3.1CRITICAL 9.8
See all 551 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences