CISA description
The Traffic Management Microkernel of BIG-IP ASM Risk Engine has a buffer overflow vulnerability, leading to a bypassing of URL-based access controls.
CVE-2021-22991
F5 · BIG-IP Traffic Management Microkernel
F5 BIG-IP Traffic Management Microkernel Buffer Overflow
Required action
Apply updates per vendor instructions.
Notes & references
Where this lands in 800-53
Vulnerability data triggers these controls during assessment and continuous monitoring.