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OpenAdvisories
High · 7.8 Known exploited CVE-2020-1464 EUVD-2020-12339GHSA-75g4-7255-wxgc

Windows Spoofing Vulnerability

Published Aug 17, 2020 · Updated Oct 21, 2025 · Assigned by microsoft

Description

A spoofing vulnerability exists when Windows incorrectly validates file signatures. An attacker who successfully exploited this vulnerability could bypass security features and load improperly signed files.
In an attack scenario, an attacker could bypass security features intended to prevent improperly signed files from being loaded.
The update addresses the vulnerability by correcting how Windows validates file signatures.

Affected products

VendorProductAffectedFixed
Microsoft Windows 10 Version 1803 10.0.0 – < publication publication
Microsoft Windows 10 Version 1809 10.0.0 – < publication publication
Microsoft Windows Server 2019 10.0.0 – < publication publication
Microsoft Windows Server 2019 (Server Core installation) 10.0.0 – < publication publication
Microsoft Windows 10 Version 1909 10.0.0 – < publication publication
Microsoft Windows Server, version 1909 (Server Core installation) 10.0.0 – < publication publication
Microsoft Windows 10 Version 1709 for 32-bit Systems 10.0.0 – < publication publication
Microsoft Windows 10 Version 1709 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 x64-based Systems 10.0.0 – < publication publication
Microsoft Windows 10 Version 1903 for ARM64-based Systems 10.0.0 – < publication publication
Microsoft Windows Server, version 1903 (Server Core installation) 10.0.0 – < publication publication
Microsoft Windows 10 Version 2004 10.0.0 – < publication publication
Microsoft Windows Server version 2004 10.0.0 – < publication publication
Microsoft Windows 10 Version 1507 10.0.0 – < publication publication
Microsoft Windows 10 Version 1607 10.0.0 – < publication publication
Microsoft Windows Server 2016 10.0.0 – < publication publication
Microsoft Windows Server 2016 (Server Core installation) 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 Service Pack 2 6.0.0 – < publication publication
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.0 – < publication publication
Microsoft Windows Server 2008 Service Pack 2 6.0.0 – < publication publication
Microsoft Windows Server 2008 R2 Service Pack 1 6.1.0 – < publication publication
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.0.0 – < publication publication
Microsoft Windows Server 2012 6.2.0 – < publication publication
Microsoft Windows Server 2012 (Server Core installation) 6.2.0 – < publication publication
Microsoft Windows Server 2012 R2 6.3.0 – < publication publication
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.0 – < publication publication

References