Security Alert (A26-02-09): Multiple Vulnerabilities in F5 Products


 

Published on: 06 February 2026

Description:

F5 has published security advisories to address multiple vulnerabilities in F5 Products. The details about the vulnerabilities can be found at the following websites:
https://my.f5.com/manage/s/article/K000159893
https://my.f5.com/manage/s/article/K000159890
https://my.f5.com/manage/s/article/K000159891
https://my.f5.com/manage/s/article/K000159896
https://my.f5.com/manage/s/article/K58243048

 

Affected Systems:

  • BIG-IP (all modules) versions 16.1.0 - 16.1.6
  • BIG-IP (all modules) versions 17.1.0 - 17.1.3
  • BIG-IP (all modules) versions 17.5.0 - 17.5.1
  • BIG-IP (all modules) versions 21.0.0
  • F5OS-A versions 1.5.1 - 1.5.4
  • F5OS-A versions 1.8.0 - 1.8.3
  • F5OS-C versions 1.6.0 - 1.6.4
  • F5OS-C versions 1.8.0 - 1.8.2
  • BIG-IP Next for Kubernetes versions 2.1.0

 

Impact:

Successful exploitation of the vulnerabilities could lead to denial of service on an affected system.

 

Recommendation:

Software updates for affected systems are now available. System administrators of affected systems should follow the recommendations provided by the product vendor and take immediate actions to mitigate the risk. It is recommended to consult the product vendors for the fixes and assistance.

 

More Information:

  • https://my.f5.com/manage/s/article/K000159893
  • https://my.f5.com/manage/s/article/K000159890
  • https://my.f5.com/manage/s/article/K000159891
  • https://my.f5.com/manage/s/article/K000159896
  • https://my.f5.com/manage/s/article/K58243048
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3737
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-58188
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-61723
  • https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2025-61725


Tag: F5 , BIG-IP , F5OS-A , F5OS-C
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