UpHeron
All vulnerabilities

Servers and applications

CVE-2021-22998

On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, 12.1.x before 12.1.5.3, and 11.6.x before 11.6.5.3, SYN flood protection thresholds are not enforced in secure network address translation (SNAT) listeners. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

Severity
Medium 5.3
Published
31 Mar 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
11.6.5.3, 12.1.5.3, 13.1.3.6, 14.1.4, 15.1.2.1, 16.0.1.1
Sources
NVD

Affected software

SoftwareAffected versions
F5 BIG-IPServers and applications · cpe:a:f5:big-ip_access_policy_manager
  • From 11.6.1 before 11.6.5.3
  • From 12.1.0 before 12.1.5.3
  • From 13.1.0 before 13.1.3.6
  • From 14.1.0 before 14.1.4
  • From 15.1.0 before 15.1.2.1
  • From 16.0.0 before 16.0.1.1
F5 BIG-IPServers and applications · cpe:a:f5:big-ip_local_traffic_manager
  • From 11.6.1 before 11.6.5.3
  • From 12.1.0 before 12.1.5.3
  • From 13.1.0 before 13.1.3.6
  • From 14.1.0 before 14.1.4
  • From 15.1.0 before 15.1.2.1
  • From 16.0.0 before 16.0.1.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-22998
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-22998