<< Back
CVE Number Vulnerability Product Severity Date
CVE-2021-26443 Microsoft Virtual Machine Bus (VMBus) Remote Code Execution Vulnerability Windows 11 Critical 10-12-2021

Technical Information

Brief overview of the risk:

A remote code execution vulnerability in Microsoft VMBus which when exploited can allow guest-to-host escape. An attacker exploiting this vulnerability can escape from the guest machine and perform code execution on the host machine.

Further information on this vulnerability is available at : CVE-2021-26443

Affected Software

Windows 10 Version 1809 for x64-based Systems
Windows Server 2019
Windows Server 2019 (Server Core installation)
Windows 10 Version 1909 for x64-based Systems
Windows 10 Version 21H1 for x64-based Systems
Windows Server 2022
Windows Server 2022 (Server Core installation)
Windows 10 Version 2004 for x64-based Systems
Windows Server version 2004 (Server Core installation)
Windows 10 Version 20H2 for x64-based Systems
Windows Server version 20H2 (Server Core Installation)
Windows 11 for x64-based Systems