CVE-2026-105733
High
Description
Improper access control in Windows Hyper-V allows an authorized attacker to execute code locally.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Windows 10 Version 21H2
PublishedOct 13, 2026
First seenOct 13, 2026
Weakness typeCWE-1419CWE-1419
How to fix
Update
- Microsoft Windows 10 Version 21H210.0.19044.7807 or later
- Microsoft Windows 10 Version 22H210.0.19045.7807 or later
- Microsoft Windows 11 version 23H210.0.22631.7652 or later
- Microsoft Windows 11 Version 23H210.0.22631.7652 or later
- Microsoft Windows 11 Version 24H210.0.26100.9711 or later
- Microsoft Windows 11 Version 25H210.0.26200.9711 or later
- Microsoft Windows 11 version 26H110.0.28000.3231 or later
- Microsoft Windows 11 Version 26H210.0.26300.9711 or later
- Microsoft Windows Server 202210.0.20348.5761 or later
- Microsoft Windows Server 202510.0.26100.33650 or later
- Microsoft Windows Server 2025 (Server Core installation)10.0.26100.33650 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Microsoft Windows 10 Version 21H2 | 10.0.19044.0 ≤ v < 10.0.19044.7807 | 10.0.19044.7807 |
| Microsoft Windows 10 Version 22H2 | 10.0.19045.0 ≤ v < 10.0.19045.7807 | 10.0.19045.7807 |
| Microsoft Windows 11 version 23H2 | 10.0.22631.0 ≤ v < 10.0.22631.7652 | 10.0.22631.7652 |
| Microsoft Windows 11 Version 23H2 | 10.0.22631.0 ≤ v < 10.0.22631.7652 | 10.0.22631.7652 |
| Microsoft Windows 11 Version 24H2 | 10.0.26100.0 ≤ v < 10.0.26100.9711 | 10.0.26100.9711 |
| Microsoft Windows 11 Version 25H2 | 10.0.26200.0 ≤ v < 10.0.26200.9711 | 10.0.26200.9711 |
| Microsoft Windows 11 version 26H1 | 10.0.28000.0 ≤ v < 10.0.28000.3231 | 10.0.28000.3231 |
| Microsoft Windows 11 Version 26H2 | 10.0.26300.0 ≤ v < 10.0.26300.9711 | 10.0.26300.9711 |
| Microsoft Windows Server 2022 | 10.0.20348.0 ≤ v < 10.0.20348.5761 | 10.0.20348.5761 |
| Microsoft Windows Server 2025 | 10.0.26100.0 ≤ v < 10.0.26100.33650 | 10.0.26100.33650 |
| Microsoft Windows Server 2025 (Server Core installation) | 10.0.26100.0 ≤ v < 10.0.26100.33650 | 10.0.26100.33650 |
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