7.8
High
CVE-2026-20920 Use after free in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally
Description
Use after free in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Windows Server 2022 10.0 | 10.0.20348.0 → < 10.0.20348.4648 | 10.0.20348.4648 |
| Windows 11 version 22H3 10.0 | 10.0.22631.0 → < 10.0.22631.6491 | 10.0.22631.6491 |
| Windows 11 Version 23H2 10.0 | 10.0.22631.0 → < 10.0.22631.6491 | 10.0.22631.6491 |
| Windows Server 2022, 23H2 Edition (Server Core installation) 10.0 | 10.0.25398.0 → < 10.0.25398.2092 | 10.0.25398.2092 |
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