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7.0
Windows Hyper-V Privilege Elevation Vulnerability
CVE-2026-25170
Summary
An attacker with local access can exploit a weakness in Windows Hyper-V to gain elevated privileges. This means they could potentially take control of your system or install malicious software. To protect yourself, apply the latest updates from Microsoft to patch the issue.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| microsoft | windows_11_23h2 | <= 10.0.22631.6783 | – |
| microsoft | windows_11_23h2 | <= 10.0.22631.6783 | – |
| microsoft | windows_11_24h2 | <= 10.0.26100.7979 | – |
| microsoft | windows_11_24h2 | <= 10.0.26100.7979 | – |
| microsoft | windows_11_25h2 | <= 10.0.26200.7979 | – |
| microsoft | windows_11_25h2 | <= 10.0.26200.7979 | – |
| microsoft | windows_11_26h1 | <= 10.0.28000.1719 | – |
| microsoft | windows_11_26h1 | <= 10.0.28000.1719 | – |
| microsoft | windows_server_2022 | <= 10.0.20348.4830 | – |
| microsoft | windows_server_2022_23h2 | <= 10.0.25398.2207 | – |
| microsoft | windows_server_2025 | <= 10.0.26100.32463 | – |
Original title
Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally.
Original description
Use after free in Windows Hyper-V allows an authorized attacker to elevate privileges locally.
nvd CVSS3.1
7.0
Vulnerability type
CWE-416
Use After Free
Published: 10 Mar 2026 · Updated: 14 Mar 2026 · First seen: 11 Mar 2026