CVE-2021-28310

Win32k Elevation of Privilege Vulnerability

CVE-2021-28310 is fixed in 20 products on 1 platform, first by KB5001339, released April 13, 2021. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on November 3, 2021. Patch Radar priority: Patch now.

Patch nowCISA KEV

CVSS

7.8

Important

Exploitation

Exploited

Reported by the vendor

CISA KEV

Nov 3, 2021

Federal due date Nov 17, 2021

EPSS

0.0840

95th percentile

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
Windows 10 Version 1803 for 32-bit Systems	17134.2145	KB5001339	Apr 13, 2021
Windows 10 Version 1803 for ARM64-based Systems	17134.2145	KB5001339	Apr 13, 2021
Windows 10 Version 1803 for x64-based Systems	17134.2145	KB5001339	Apr 13, 2021
Windows 10 Version 1809 for 32-bit Systems	17763.1879	KB5001342	Apr 13, 2021
Windows 10 Version 1809 for ARM64-based Systems	17763.1879	KB5001342	Apr 13, 2021
Windows 10 Version 1809 for x64-based Systems	17763.1879	KB5001342	Apr 13, 2021
Windows 10 Version 1909 for 32-bit Systems	18363.1500	KB5001337	Apr 13, 2021
Windows 10 Version 1909 for ARM64-based Systems	18363.1500	KB5001337	Apr 13, 2021
Windows 10 Version 1909 for x64-based Systems	18363.1500	KB5001337	Apr 13, 2021
Windows 10 Version 2004 for 32-bit Systems		KB5001330	Apr 13, 2021
Windows 10 Version 2004 for ARM64-based Systems		KB5001330	Apr 13, 2021
Windows 10 Version 2004 for x64-based Systems		KB5001330	Apr 13, 2021
Windows 10 Version 20H2 for 32-bit Systems		KB5001330	Apr 13, 2021
Windows 10 Version 20H2 for ARM64-based Systems		KB5001330	Apr 13, 2021
Windows 10 Version 20H2 for x64-based Systems		KB5001330	Apr 13, 2021
Windows Server 2019	17763.1879	KB5001342	Apr 13, 2021
Windows Server 2019 (Server Core installation)	17763.1879	KB5001342	Apr 13, 2021
Windows Server, version 1909 (Server Core installation)	18363.1500	KB5001337	Apr 13, 2021
Windows Server, version 2004 (Server Core installation)		KB5001330	Apr 13, 2021
Windows Server, version 20H2 (Server Core Installation)		KB5001330	Apr 13, 2021

Details

Published
April 13, 2021
CISA required action
Apply updates per vendor instructions.
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-28310

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