CVE-2021-22991
악용 확인 F5 BIG-IP Traffic Management Microkernel Buffer Overflow
악용 여부
악용 확인
2022-01-18
2022-02-01
CISA 미확인
F5 BIG-IP Traffic Management Microkernel
심각도 (발행처 발표값)
심각9.8
3.1
NVD (미국 NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
악용 확률 (EPSS)
61.1%
61.06%
99.1%
2026-09-04
한국어 공식 권고
CISA 원문
The Traffic Management Microkernel of BIG-IP ASM Risk Engine has a buffer overflow vulnerability, leading to a bypassing of URL-based access controls.— CISA KEV · shortDescription 원문
Apply updates per vendor instructions.— CISA KEV · requiredAction 원문
취약점 설명 (NVD 원문)
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.
CWE-119 CWE-119
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