CVE-2026-70076
High
Description
Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
SeverityHigh
CVSS7.0
Exploit probability—
Product
Windows 11 Version 24H2
PublishedOct 13, 2026
First seenOct 13, 2026
Weakness typeCWE-416Use after free
How to fix
Update
- 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 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 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 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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