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CVE-2021-31955

Known Exploited (CISA KEV)MEDIUM
5.5
CVSS Severity Score
EPSS Score66.9570%
EPSS Percentile97.13th
PublishedJun 8, 2021
Last ModifiedOct 30, 2025

Vulnerability Description

Windows Kernel Information Disclosure Vulnerability

Affected Platforms (CPE)

💻
Microsoft

Windows 10 1809

< 10.0.17763.1999
💻
Microsoft

Windows 10 1909

< 10.0.18363.1621
💻
Microsoft

Windows 10 2004

< 10.0.19041.1052
💻
Microsoft

Windows 10 20h2

< 10.0.19042.1052
💻
Microsoft

Windows 10 21h1

< 10.0.19043.1052
💻
Microsoft

Windows Server 2004

< 10.0.19041.1052
💻
Microsoft

Windows Server 2019

< 10.0.17763.1999
💻
Microsoft

Windows Server 20h2

< 10.0.19042.1052

References & Advisories

🔗 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31955
🔗 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31955
🔗 https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-31955

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