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OpenAdvisories
High · 7.0 CVE-2020-1143 EUVD-2020-12028GHSA-pr55-m2r8-wvg6

Win32k Elevation of Privilege Vulnerability

Published May 21, 2020 · Updated Aug 19, 2026 · Assigned by microsoft

Description

An elevation of privilege vulnerability exists in Windows when the Windows kernel-mode driver fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.
To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system.
The update addresses this vulnerability by correcting how the Windows kernel-mode driver handles objects in memory.

Affected products

VendorProductAffectedFixed
Microsoft Windows 10 Version 1507 10.0.10240.0 – < publication publication
Microsoft Windows 10 Version 1607 10.0.14393.0 – < publication publication
Microsoft Windows 10 Version 1709 10.0.0 – < publication publication
Microsoft Windows 10 Version 1709 for 32-bit Systems 10.0.0 – < publication publication
Microsoft Windows 10 Version 1803 10.0.0 – < publication publication
Microsoft Windows 10 Version 1809 10.0.17763.0 – < publication, 10.0.0 – < publication publication
Microsoft Windows 10 Version 1903 for 32-bit Systems 10.0.0 – < publication publication
Microsoft Windows 10 Version 1903 for ARM64-based Systems 10.0.0 – < publication publication
Microsoft Windows 10 Version 1903 for x64-based Systems 10.0.0 – < publication publication
Microsoft Windows 10 Version 1909 10.0.0 – < publication publication
Microsoft Windows 7 6.1.0 – < publication publication
Microsoft Windows 7 Service Pack 1 6.1.0 – < publication publication
Microsoft Windows 8.1 6.3.0 – < publication publication
Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.0 – < publication publication
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.0 – < publication publication
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0 – < publication publication
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.0 – < publication publication
Microsoft Windows Server 2012 6.2.9200.0 – < publication publication
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 – < publication publication
Microsoft Windows Server 2012 R2 6.3.9600.0 – < publication publication
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 – < publication publication
Microsoft Windows Server 2016 10.0.14393.0 – < publication publication
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 – < publication publication
Microsoft Windows Server 2019 10.0.17763.0 – < publication publication
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 – < publication publication
Microsoft Windows Server, version 1803 (Server Core Installation) 10.0.0 – < publication publication
Microsoft Windows Server, version 1903 (Server Core installation) 10.0.0 – < publication publication
Microsoft Windows Server, version 1909 (Server Core installation) 10.0.0 – < publication publication

References