high7.0
CVE-2026-26166
Double free in Windows Shell allows an authorized attacker to elevate privileges locally.
Impact
Double free in Windows Shell allows an authorized attacker to elevate privileges locally.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | Windows 11 23h2 | before 10.0.22631.6936 |
| Microsoft | Windows 11 24h2 | before 10.0.26100.8246 |
| Microsoft | Windows 11 25h2 | before 10.0.26200.8246 |
| Microsoft | Windows 11 26h1 | before 10.0.28000.1836 |
| Microsoft | Windows Server 2022 | before 10.0.20348.5020 |
| Microsoft | Windows Server 2022 23h2 | before 10.0.25398.2274 |
| Microsoft | Windows Server 2025 | before 10.0.26100.32690 |