KLA12214
RCE vulnerability in Microsoft Products (ESU)

Updated: 07/27/2021
Detect date
?
07/01/2021
Severity
?
Critical
Description

A remote code execution vulnerability was found in Microsoft Products (Extended Support Update). Malicious users can exploit this vulnerability to execute arbitrary code.

Exploitation

The following public exploits exists for this vulnerability:

https://github.com/byt3bl33d3r/ItWasAllADream

https://github.com/cube0x0/CVE-2021-1675

https://github.com/JohnHammond/CVE-2021-34527

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

Affected products

Windows 7 for 32-bit Systems Service Pack 1
Windows Server 2012 R2 (Server Core installation)
Windows Server 2016
Windows 10 Version 1909 for x64-based Systems
Windows 10 Version 1909 for 32-bit Systems
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows 10 Version 21H1 for ARM64-based Systems
Windows 10 Version 2004 for 32-bit Systems
Windows Server 2012
Windows RT 8.1
Windows 10 Version 1909 for ARM64-based Systems
Windows 10 for 32-bit Systems
Windows 7 for x64-based Systems Service Pack 1
Windows 8.1 for x64-based systems
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows 10 Version 2004 for x64-based Systems
Windows 10 Version 21H1 for x64-based Systems
Windows Server 2019
Windows Server 2019 (Server Core installation)
Windows 10 Version 1809 for 32-bit Systems
Windows 10 Version 1607 for x64-based Systems
Windows 10 Version 20H2 for ARM64-based Systems
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows Server 2016 (Server Core installation)
Windows 8.1 for 32-bit systems
Windows Server 2012 (Server Core installation)
Windows 10 Version 21H1 for 32-bit Systems
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
Windows Server 2012 R2
Windows 10 Version 1809 for ARM64-based Systems
Windows 10 Version 2004 for ARM64-based Systems
Windows 10 Version 20H2 for x64-based Systems
Windows 10 Version 1607 for 32-bit Systems
Windows 10 for x64-based Systems
Windows 10 Version 20H2 for 32-bit Systems
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
Windows Server, version 2004 (Server Core installation)
Windows Server, version 20H2 (Server Core Installation)
Windows 10 Version 1809 for x64-based 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-2021-34527

Impacts
?
ACE 
[?]
Related products
Microsoft Windows
Microsoft Windows Server
Microsoft Windows Server 2012
Microsoft Windows 8
Microsoft Windows 7
Microsoft Windows Server 2008
Windows RT
Microsoft Windows 10
CVE-IDS
?
CVE-2021-345279.0Critical
KB list

5004955
5004959
5004953
5004951

Microsoft official advisories
Microsoft Security Update Guide
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