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Vulnerability1 · 1 read

CVE-2026-119947

Use-after-free privilege escalation in Windows Hyper-V

CVSS 3.1
7.5 high
EPSS
—
Published
·
Modified
Analyze CVE-2026-119947 with Vani AIImpact, affected versions, exploitation status, mitigations and detection

A use-after-free flaw in Windows Hyper-V lets an already authorized attacker elevate privileges. It is local only, needs high privileges, and does not require user interaction. Success yields high impact on confidentiality, integrity, and availability, with a changed scope. Microsoft has not listed affected builds.

What to do: Apply Microsoft's update for CVE-2026-119947. Microsoft has not stated a fixed version or workaround.

ProductAffected
Microsoft Windows Hyper-V—
Estimated exposure
No basis for an estimate.

Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.

Description · NVD

Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally.

Weakness
CWE-416
Vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

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