CVE-2021-22991
F5 BIG-IP Traffic Management Microkernel Buffer Overflow
- 대응 우선순위
- 최우선
- CVSS
- 9.8
- EPSS
- 61.1% 백분위 99.0% · 2026.06.27 기준
- CISA KEV
- 등록
- 조치 기한
- 2022.02.01
- 공개일
- 2021.04.01
CISA KEV에 등록된 실제 악용 확인 취약점
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.
공급사 F5
제품 BIG-IP Traffic Management Microkernel
영향 버전 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, 12.1.x before 12.1.5.3, >= 12.1.0 < 12.1.5.3, >= 13.1.0 < 13.1.3.6, >= 14.1.0 < 14.1.4, >= 15.1.0 < 15.1.2.1, >= 16.0.0 < 16.0.1.1
수정 버전 12.1.5.3, 13.1.3.6, 14.1.4, 15.1.2.1, 16.0.1.1
Apply updates per vendor instructions.
조치 기한: 2022.02.01CVSS 벡터 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-119
KEV 등록일 2022.01.18
랜섬웨어 캠페인 사용 미확인
CISA 비고 https://nvd.nist.gov/vuln/detail/CVE-2021-22991
EPSS 데이터 기준일 2026.06.27