High7.8Microsoft Server Exploited CISA KEV

High [CVE-2021-1732] Windows Win32k Elevation of Privilege Vulnerability

This high-severity Microsoft Server advisory covers CVE-2021-1732 affecting Windows Server 2019 (Server Core installation), Windows Server, version 1909 (Server Core installation), Windows Server version 2004.

CVE-2021-1732 Published Feb 25, 2021Updated by vendor Aug 12, 2026

CVE-2021-1732

Affected products & platforms

Microsoft ServerWindows Server

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Summary

Windows Win32k Elevation of Privilege Vulnerability

Affected products named by the advisory: Windows Server 2019; Windows Server 2019 (Server Core installation); Windows Server, version 1909 (Server Core installation); Windows Server version 2004; and 1 more.

Affected products named by the advisory: Windows Server version 20H2.

CISA Known Exploited Vulnerability

Listed:: Nov 3, 2021 · federal remediation due Nov 17, 2021
Required action:: Apply updates per vendor instructions.
Ransomware use:: Known

KEV is a prioritization signal from CISA — remediation detail still comes from the vendor advisory.

Affected versions

Windows 10 Version 1803 10.0.0 before publication
Windows 10 Version 1809 10.0.0 before publication
Windows Server 2019 10.0.0 before publication
Windows Server 2019 (Server Core installation) 10.0.0 before publication
Windows 10 Version 1909 10.0.0 before publication
Windows Server, version 1909 (Server Core installation) 10.0.0 before publication
Windows 10 Version 2004 10.0.0 before publication
Windows Server version 2004 10.0.0 before publication
Windows 10 Version 20H2 10.0.0 before publication
Windows Server version 20H2 10.0.0 before publication

Official advisory · high-confidence parse· fetched 1 hour ago·verify at source

Fixed versions

publication

Official advisory · high-confidence parse· fetched 1 hour ago·verify at source

Mitigation

Upgrade to a fixed release: publication. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 1 hour ago·verify at source

Discussion(0)

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