CVE-2021-33739

HighCVSS 8.4/10Known exploited (CISA KEV)Last modified Jun 17, 2026

Description

Microsoft DWM Core Library Elevation of Privilege Vulnerability

Metrics

CVSS 3.1 8.4/10CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected software

VendorProductVersions
MicrosoftWindows 10 Version 1909>= 10.0.0, < 10.0.18363.1621
MicrosoftWindows 10 Version 21H1>= 10.0.0, < 10.0.19043.1052
MicrosoftWindows 10 Version 2004>= 10.0.0, < 10.0.19041.1052
MicrosoftWindows Server version 2004>= 10.0.0, < 10.0.19041.1052
MicrosoftWindows 10 Version 20H2>= 10.0.0, < 10.0.19042.1052
MicrosoftWindows Server version 20H2>= 10.0.0, < 10.0.19042.1052

References

Timeline

Published
Jun 8, 2021
Last modified
Jun 17, 2026
Added to CISA KEV
Nov 3, 2021
NVD status
Analyzed

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CVE-2021-33739: High severity, CVSS 8.4 | Vulnix