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CVE-2021-26443critical

Microsoft Virtual Machine Bus (VMBus) Remote Code Execution Vulnerability

28Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 9epss 1.7%
exploitation probability
1.7%top 24% of all CVEs
observed exploitation
nono source reports it
Microsoft Virtual Machine Bus (VMBus) Remote Code Execution Vulnerability
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected products
Microsoft · Windows 10 Version 1809Microsoft · Windows 10 Version 1909Microsoft · Windows 10 Version 2004Microsoft · Windows 10 Version 21H1Microsoft · Windows 11 version 21H2Microsoft · Windows Server 2019Microsoft · Windows Server 2019 (Server Core installation)Microsoft · Windows Server 2022Microsoft · Windows Server version 2004Microsoft · Windows Server version 20H2
References
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26443https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26443