A remote code execution vulnerability exists when Windows Hyper-V on a host server fails to properly validate vSMB packet data, aka "Hyper-V vSMB Remote Code Execution Vulnerability." This affects Windows Server 2016, Windows 10, Windows 10 Servers.
Severity
CVSS 3.0
7.6 high
CVSS:3.0/AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS
3.1% chance of exploitation in the next 30 days; higher than 87% of CVEs (scores of 2026-10-31)