WINDOWS HYPER-V · CVE-2026-119391 · Infrastructure
NO FIX YET
A use-after-free bug in Windows Hyper-V lets an attacker who already has a local account raise their privileges. The sources give a CVSS score of 7.8 and say nothing else about the exploit path.
first public Nov 10, 2026 · 1 source
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Hyper-V hosts on Windows are the systems in scope, since the flaw sits in Hyper-V itself. The sources do not say which Windows builds or Hyper-V configurations are affected, so whether machines without the Hyper-V role are exposed is unknown.
Not affected if hyper-v-role-not-installed
Who cares hyper-v, windows
Get-WindowsFeature Hyper-V in PowerShellNo fix yet, per the sources.
Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally.
This page as .md · .json · CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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