CVE-2021-41773
Apache HTTP Server Path Traversal Vulnerability
- 대응 우선순위
- 최우선
- CVSS
- 9.8
- EPSS
- 100.0% 백분위 100.0% · 2026.06.27 기준
- CISA KEV
- 등록
- 조치 기한
- 2021.11.17
- 공개일
- 2021.10.05
CISA KEV에 등록된 실제 악용 확인 취약점
A flaw was found in a change made to path normalization in Apache HTTP Server 2.4.49. An attacker could use a path traversal attack to map URLs to files outside the directories configured by Alias-like directives. If files outside of these directories are not protected by the usual default configuration "require all denied", these requests can succeed. If CGI scripts are also enabled for these aliased pathes, this could allow for remote code execution. This issue is known to be exploited in the wild. This issue only affects Apache 2.4.49 and not earlier versions. The fix in Apache HTTP Serv...
공급사 Apache
제품 HTTP Server
영향 버전 Apache HTTP Server 2.4 2.4.49, 2.4.49, 34, 35, 17.1, 17.2, 17.3
수정 버전 공식 출처에서 확인 필요
Apply updates per vendor instructions.
조치 기한: 2021.11.17CVSS 벡터 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE CWE-22
KEV 등록일 2021.11.03
랜섬웨어 캠페인 사용 확인됨
CISA 비고 https://nvd.nist.gov/vuln/detail/CVE-2021-41773
EPSS 데이터 기준일 2026.06.27