High Threat Security Alert (A26-08-08): Multiple Vulnerabilities in F5 Products

Description:

F5 has published security advisories to address multiple vulnerabilities in F5 Products. The details about the vulnerabilities can be found at the following website:
https://my.f5.com/manage/s/article/K000162783
https://my.f5.com/manage/s/article/K000162807

Reports indicated that proof-of-concept (PoC) exploit code is publicly available for a denial of service vulnerability (CVE-2026-53359) and it is at high risk of exploitation. System administrators are advised to take immediate action to patch your affected systems to mitigate the elevated risk of cyber attacks.

Affected Systems:

• F5OS versions 2.0.0
• F5OS-A versions 1.5.1 - 1.5.4, 1.8.0 - 1.8.4
• F5OS-C versions 1.6.0 - 1.6.4, 1.8.0 - 1.8.2

For detailed information of the affected systems, please refer to the corresponding security advisories at vendor's website.

Impact:

Successful exploitation of the vulnerabilities could lead to remote code execution, denial of service or information disclosure on an affected system.

Recommendation:

Mitigation 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/K000162783
• https://my.f5.com/manage/s/article/K000162807
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-53135
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-53359