KLA12246
PE vulnerability in Microsoft Products (ESU)

An elevation of privilege vulnerability was found in Microsoft Products (Extended Support Update). Malicious users can exploit this vulnerability to gain privileges.

Malware exists for this vulnerability. Usually such malware is classified as Exploit. More details.

Windows 10 Version 1809 for ARM64-based Systems
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
Windows 10 for x64-based Systems
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
Windows 10 Version 21H1 for 32-bit Systems
Windows 10 Version 1909 for ARM64-based Systems
Windows 7 for 32-bit Systems Service Pack 1
Windows 8.1 for 32-bit systems
Windows 10 for 32-bit Systems
Windows Server 2012
Windows Server 2019 (Server Core installation)
Windows 10 Version 1909 for x64-based Systems
Windows Server 2012 R2
Windows 10 Version 20H2 for ARM64-based Systems
Windows 10 Version 1909 for 32-bit Systems
Windows 8.1 for x64-based systems
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows 10 Version 1607 for 32-bit Systems
Windows Server 2012 (Server Core installation)
Windows 7 for x64-based Systems Service Pack 1
Windows 10 Version 20H2 for 32-bit Systems
Windows Server, version 2004 (Server Core installation)
Windows 10 Version 2004 for x64-based Systems
Windows 10 Version 2004 for ARM64-based Systems
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2019
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server, version 20H2 (Server Core Installation)
Windows 10 Version 21H1 for x64-based Systems
Windows Server 2016
Windows 10 Version 1607 for x64-based Systems
Windows 10 Version 20H2 for x64-based Systems
Windows 10 Version 21H1 for ARM64-based Systems
Windows 10 Version 1809 for 32-bit Systems
Windows Server 2012 R2 (Server Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows 10 Version 1809 for x64-based Systems
Windows Server 2016 (Server Core installation)
Windows RT 8.1
Windows 10 Version 2004 for 32-bit Systems

Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)