UpHeron
All vulnerabilities

Servers and applications

CVE-2021-22999

On versions 15.0.x before 15.1.0 and 14.1.x before 14.1.4, the BIG-IP system provides an option to connect HTTP/2 clients to HTTP/1.x servers. When a client is slow to accept responses and it closes a connection prematurely, the BIG-IP system may indefinitely retain some streams unclosed. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

Severity
High 7.5
Published
31 Mar 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
14.1.4, 15.1.0
Sources
NVD

Affected software

SoftwareAffected versions
F5 BIG-IPServers and applications · cpe:a:f5:big-ip_access_policy_manager
  • From 14.1.0 before 14.1.4
  • From 15.0.0 before 15.1.0
F5 BIG-IPServers and applications · cpe:a:f5:big-ip_local_traffic_manager
  • From 14.1.0 before 14.1.4
  • From 15.0.0 before 15.1.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-22999
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-22999