Firetruck

CVE-2021-36934

KEV
Updated Aug 10, 2026 · PUBLISHED
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Description

If a Volume Shadow Copy (VSS) shadow copy of the system drive is available, users can read the SAM file which would allow any user to escalate privileges to SYSTEM level.

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Affected packages

PackageVendor / ProductVersion rangeStatus
Windows 10 Version 1809Microsoft / Windows 10 Version 1809>= 10.0.0, < 10.0.17763.2114affected
Windows 10 Version 1809Microsoft / Windows 10 Version 1809>= 10.0.17763.0, < 10.0.17763.2114affected
Windows 10 Version 1909Microsoft / Windows 10 Version 1909>= 10.0.0, < 10.0.18363.1734affected
Windows 10 Version 2004Microsoft / Windows 10 Version 2004>= 10.0.0, < 10.0.19041.1165affected
Windows 10 Version 20H2Microsoft / Windows 10 Version 20H2>= 10.0.0, < 10.0.19042.1165affected
Windows 10 Version 21H1Microsoft / Windows 10 Version 21H1>= 10.0.0, < 10.0.19043.1165affected