CVE-2021-40444
Microsoft MSHTML Remote Code Execution Vulnerability
- 대응 우선순위
- 최우선
- CVSS
- 7.8
- EPSS
- 96.8% 백분위 99.9% · 2026.06.27 기준
- CISA KEV
- 등록
- 조치 기한
- 2021.11.17
- 공개일
- 2021.09.15
CISA KEV에 등록된 실제 악용 확인 취약점
<p>Microsoft is investigating reports of a remote code execution vulnerability in MSHTML that affects Microsoft Windows. Microsoft is aware of targeted attacks that attempt to exploit this vulnerability by using specially-crafted Microsoft Office documents.</p> <p>An attacker could craft a malicious ActiveX control to be used by a Microsoft Office document that hosts the browser rendering engine. The attacker would then have to convince the user to open the malicious document. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who o...
공급사 Microsoft
제품 MSHTML
영향 버전 10.0.0, 6.1.0, 6.3.0, 6.0.0, 6.2.0, < 10.0.10240.19060, < 10.0.14393.4651, < 10.0.17763.2183, < 10.0.18363.1801, < 10.0.19041.1237, < 10.0.19042.1237, < 10.0.19043.1237, r2, < 10.0.20348.230
수정 버전 10.0.10240.19060, 10.0.14393.4651, 10.0.17763.2183, 10.0.18363.1801, 10.0.19041.1237, 10.0.19042.1237, 10.0.19043.1237, 10.0.20348.230
Apply updates per vendor instructions.
조치 기한: 2021.11.17CVSS 벡터 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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-2021-40444
EPSS 데이터 기준일 2026.06.27