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7.8 High

CVE-2026-20871 Use after free in Desktop Windows Manager allows an authorized attacker to elevate privileges locally

Description

Use after free in Desktop Windows Manager 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 10 Version 21H2 10.0 10.0.19044.0 → < 10.0.19044.6809 10.0.19044.6809
Windows 10 Version 22H2 10.0 10.0.19045.0 → < 10.0.19045.6809 10.0.19045.6809
Windows Server 2025 (Server Core installation) 10.0 10.0.26100.0 → < 10.0.26100.32230 10.0.26100.32230
Windows 11 Version 25H2 10.0 10.0.26200.0 → < 10.0.26200.7623 10.0.26200.7623
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
Windows 11 Version 24H2 10.0 10.0.26100.0 → < 10.0.26100.7623 10.0.26100.7623
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Product Affected versions Fixed in
Windows Server 2025 10.0 10.0.26100.0 → < 10.0.26100.32230 10.0.26100.32230

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