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CVE-2023-21674

KEV
Updated Oct 21, 2025 · PUBLISHED
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Description

Microsoft Windows Advanced Local Procedure Call (ALPC) contains an unspecified vulnerability that allows for privilege escalation.

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Affected packages

PackageVendor / ProductVersion rangeStatus
Windows 10 Version 1507Microsoft / Windows 10 Version 1507>= 10.0.10240.0, < 10.0.10240.19685affected
Windows 10 Version 1607Microsoft / Windows 10 Version 1607>= 10.0.14393.0, < 10.0.14393.5648affected
Windows 10 Version 1809Microsoft / Windows 10 Version 1809>= 10.0.0, < 10.0.17763.3887affected
Windows 10 Version 1809Microsoft / Windows 10 Version 1809>= 10.0.17763.0, < 10.0.17763.3887affected
Windows 10 Version 20H2Microsoft / Windows 10 Version 20H2>= 10.0.0, < 10.0.19042.2486affected
Windows 10 Version 21H2Microsoft / Windows 10 Version 21H2>= 10.0.19043.0, < 10.0.19044.2486affected
Windows 10 Version 22H2Microsoft / Windows 10 Version 22H2>= 10.0.19045.0, < 10.0.19045.2486affected
Windows 11 version 21H2Microsoft / Windows 11 version 21H2>= 10.0.0, < 10.0.22000.1455affected
Windows 11 version 22H2Microsoft / Windows 11 version 22H2>= 10.0.22621.0, < 10.0.22621.1105affected
Windows 8.1Microsoft / Windows 8.1>= 6.3.0, < 6.3.9600.20778affected
Windows Server 2012 R2Microsoft / Windows Server 2012 R2>= 6.3.9600.0, < 6.3.9600.20778affected
Windows Server 2012 R2 (Server Core installation)Microsoft / Windows Server 2012 R2 (Server Core installation)>= 6.3.9600.0, < 6.3.9600.20778affected
Windows Server 2016Microsoft / Windows Server 2016>= 10.0.14393.0, < 10.0.14393.5648affected
Windows Server 2016 (Server Core installation)Microsoft / Windows Server 2016 (Server Core installation)>= 10.0.14393.0, < 10.0.14393.5648affected
Windows Server 2019Microsoft / Windows Server 2019>= 10.0.17763.0, < 10.0.17763.3887affected
Windows Server 2019 (Server Core installation)Microsoft / Windows Server 2019 (Server Core installation)>= 10.0.17763.0, < 10.0.17763.3887affected
Windows Server 2022Microsoft / Windows Server 2022>= 10.0.20348.0, < 10.0.20348.1487affected