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TI-2021-05844 Aliases CVE-2021-22985GHSA-fj8x-2c72-3h8w

Uncontrolled resource consumption in BIG-IP APM

Priority LOW 35CWE-400Published · 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 · NVD. Fix status from CNA. Impact type from CWE-400.

Summary

On BIG-IP APM version 16.0.x before 16.0.1.1, under certain conditions, when processing VPN traffic with APM, TMM consumes excessive memory. A malicious, authenticated VPN user may abuse this to perform a DoS attack against the APM. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

Why it matters now

EPSS 0.01025 63rd percentileScored 2026-11-07
Fix Fixed BIG-IP APM: 16.0.1.1

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—BIG-IP APM16.0 to before 16.0.1.116.0.1.1Patch availableCNA
  • BIG-IP APM Vendor— Affected 16.0 to before 16.0.1.1 Fixed in 16.0.1.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:*11.6.1 to before 11.6.5.2; 12.1.0 to before 12.1.5.3; 13.1.0 to before 13.1.3.6; 14.1.0 to before 14.1.2.8; 15.1.0 to before 15.1.2; 16.0.0 to before 16.0.1.1VulnerableF5
  • cpe:2.3:a:f5:big-ip_application_security_manager:*:*:*:*:*:*:*:* Versions 11.6.1 to before 11.6.5.2; 12.1.0 to before 12.1.5.3; 13.1.0 to before 13.1.3.6; 14.1.0 to before 14.1.2.8; 15.1.0 to before 15.1.2; 16.0.0 to before 16.0.1.1 Vulnerable ·F5

Remediation

  • Fix · CNA BIG-IP APM Fixed in 16.0.1.1

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-22985
  2. 2026-10-03 Alias added: GHSA-fj8x-2c72-3h8w

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 580 →

Sources

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