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CVE-2021-36955

Known Exploited (CISA KEV)HIGH
7.8
CVSS Severity Score
EPSS Score45.2680%
EPSS Percentile91.12th
PublishedSep 15, 2021
Last ModifiedOct 30, 2025

Vulnerability Description

Windows Common Log File System Driver Elevation of Privilege Vulnerability

Affected Platforms (CPE)

💻
Microsoft

Windows 10 1507

< 10.0.10240.19060
💻
Microsoft

Windows 10 1607

< 10.0.14393.4651
💻
Microsoft

Windows 10 1809

< 10.0.17763.2183
💻
Microsoft

Windows 10 1909

< 10.0.18363.1801
💻
Microsoft

Windows 10 2004

< 10.0.19041.1237
💻
Microsoft

Windows 10 20h2

< 10.0.19042.1237
💻
Microsoft

Windows 10 21h1

< 10.0.19043.1237
💻
Microsoft

Windows 7

All versions
💻
Microsoft

Windows 8.1

All versions
💻
Microsoft

Windows Rt 8.1

All versions
💻
Microsoft

Windows Server 2004

< 10.0.19041.1237
💻
Microsoft

Windows Server 2008

All versions
💻
Microsoft

Windows Server 2008

= r2
💻
Microsoft

Windows Server 2012

All versions
💻
Microsoft

Windows Server 2012

All versions
💻
Microsoft

Windows Server 2016

< 10.0.14393.4651
💻
Microsoft

Windows Server 2019

< 10.0.17763.2183
💻
Microsoft

Windows Server 2022

< 10.0.20348.230
💻
Microsoft

Windows Server 20h2

< 10.0.19042.1237

References & Advisories

🔗 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36955
🔗 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36955
🔗 https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36955

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