Microsoft: Windows Spoofing Vulnerability
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.
Windows RT 8.1,Windows Server, version 2004 (Server Core installation),Windows Server, version 1903 (Server Core installation),Windows Server 2016,Windows Server 2012,Windows 8,Windows 7,Windows 10,Windows Server 2008,Windows Server, version 1909 (Server Core installation)