Firetruck

CVE-2021-31955

KEV
Updated Oct 21, 2025 · PUBLISHED
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Description

Microsoft Windows Kernel contains an unspecified vulnerability that allows for information disclosure. Successful exploitation allows attackers to read the contents of kernel memory from a user-mode process.

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Affected packages

PackageVendor / ProductVersion rangeStatus
Windows 10 Version 1809Microsoft / Windows 10 Version 1809>= 10.0.0, < 10.0.17763.1999affected
Windows 10 Version 1909Microsoft / Windows 10 Version 1909>= 10.0.0, < 10.0.18363.1621affected
Windows 10 Version 2004Microsoft / Windows 10 Version 2004>= 10.0.0, < 10.0.19041.1052affected
Windows 10 Version 20H2Microsoft / Windows 10 Version 20H2>= 10.0.0, < 10.0.19042.1052affected
Windows 10 Version 21H1Microsoft / Windows 10 Version 21H1>= 10.0.0, < 10.0.19043.1052affected
Windows Server 2019Microsoft / Windows Server 2019>= 10.0.0, < 10.0.17763.1999affected
Windows Server 2019 (Server Core installation)Microsoft / Windows Server 2019 (Server Core installation)>= 10.0.0, < 10.0.17763.1999affected
Windows Server version 2004Microsoft / Windows Server version 2004>= 10.0.0, < 10.0.19041.1052affected
Windows Server version 20H2Microsoft / Windows Server version 20H2>= 10.0.0, < 10.0.19042.1052affected