KLA12239 PE vulnerability in Microsoft Windows

Detect date:

07/20/2021

Severity:

High

Description:

An elevation of privilege vulnerability was found in Microsoft Windows. Malicious users can exploit this vulnerability to gain privileges.

Exploitation:

Public exploits exist for this vulnerability.

Affected products:

Windows 10 Version 1909 for x64-based Systems
Windows Server, version 2004 (Server Core installation)
Windows 10 Version 21H1 for x64-based Systems
Windows Server 2019 (Server Core installation)
Windows 10 Version 1809 for ARM64-based Systems
Windows 10 Version 20H2 for x64-based Systems
Windows 10 Version 21H1 for 32-bit Systems
Windows 10 Version 1809 for x64-based Systems
Windows 10 Version 20H2 for ARM64-based Systems
Windows 10 Version 2004 for ARM64-based Systems
Windows 10 Version 1909 for ARM64-based Systems
Windows 10 Version 2004 for 32-bit Systems
Windows Server 2019
Windows 10 Version 1909 for 32-bit Systems
Windows 10 Version 2004 for x64-based Systems
Windows 10 Version 21H1 for ARM64-based Systems
Windows 10 Version 20H2 for 32-bit Systems
Windows 10 Version 1809 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-2021-36934

Impacts:

ACE

Related products:

Microsoft Windows Server

CVE-IDS:

CVE-2021-369347.8Critical

Microsoft official advisories:

KB list:

5005031
5005033
5005030