CVE-2021-26443

CriticalCVSS 9.0

Published: 10/11/2021(UTC)Updated: 19/08/2026(UTC)Translated: 19/08/2026(UTC)NVD NIST

Exploitation Probability (EPSS)

Elevated risk

1.54%

73th percentile - higher than 73% of all known CVEs

Remote code execution vulnerability in Microsoft Virtual Machine Bus (VMBus). An attacker could exploit this flaw to execute arbitrary code.

Risk of system takeover, which could compromise the security of the virtualization environment.

Install the latest security updates from Microsoft for Windows.

Original NVD description (English source)

Microsoft Virtual Machine Bus (VMBus) Remote Code Execution Vulnerability