KLA12246 PE vulnerability in Microsoft Products (ESU)

Detect date:

07/15/2021

Severity:

High

Description:

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

Exploitation:

Public exploits exist for this vulnerability.

Affected products:

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

Solution:

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

Original advisories:

CVE-2021-34481

Impacts:

ACE

Related products:

Microsoft Windows

CVE-IDS:

CVE-2021-344818.8Critical

Microsoft official advisories:

KB list:

5005090
5005089
5005095
5005088