CVE-2021-22991
🔥 Known Exploited (CISA KEV)CRITICAL
9.8
CVSS Severity Score
Vulnerability Description
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, and 12.1.x before 12.1.5.3, undisclosed requests to a virtual server may be incorrectly handled by the Traffic Management Microkernel (TMM) URI normalization, which may trigger a buffer overflow, resulting in a DoS attack. In certain situations, it may theoretically allow bypass of URL based access control or remote code execution (RCE). Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.
Affected Platforms (CPE)
📦
F5
Big Ip Access Policy Manager
>= 12.1.0 and < 12.1.5.3>= 13.1.0 and < 13.1.3.6>= 14.1.0 and < 14.1.4>= 15.1.0 and < 15.1.2.1>= 16.0.0 and < 16.0.1.1
📦
F5
Big Ip Advanced Firewall Manager
>= 12.1.0 and < 12.1.5.3>= 13.1.0 and < 13.1.3.6>= 14.1.0 and < 14.1.4>= 15.1.0 and < 15.1.2.1>= 16.0.0 and < 16.0.1.1
📦
F5
Big Ip Advanced Web Application Firewall
>= 12.1.0 and < 12.1.5.3>= 13.1.0 and < 13.1.3.6>= 14.1.0 and < 14.1.4>= 15.1.0 and < 15.1.2.1>= 16.0.0 and < 16.0.1.1
📦
F5
Big Ip Analytics
>= 12.1.0 and < 12.1.5.3>= 13.1.0 and < 13.1.3.6>= 14.1.0 and < 14.1.4>= 15.1.0 and < 15.1.2.1>= 16.0.0 and < 16.0.1.1