CVE-2026-27924

Published: Apr 14, 2026Modified: Apr 22, 2026

7.8

Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitability: 1.8 / Impact: 5.9

Source: secure@microsoft.com

Description

Use after free in Desktop Window Manager allows an authorized attacker to elevate privileges locally.

Affected (10)

Products: Microsoft: Windows 10 21h2, Windows 10 22h2, Windows 11 23h2, Windows Server 2022, Windows Server 2022 23h2

5 products

Windows 10 21h2

Windows 10 22h2

Windows 11 23h2

Windows Server 2022

Windows Server 2022 23h2

Configuration A

10 vulnerable

Vulnerable Software	Affected Versions
Microsoft Windows 10 21h2	Before 10.0.19044.7184
Microsoft Windows 10 21h2	Before 10.0.19044.7184
Microsoft Windows 10 21h2	Before 10.0.19044.7184
Microsoft Windows 10 22h2	Before 10.0.19045.7184
Microsoft Windows 10 22h2	Before 10.0.19045.7184
Microsoft Windows 10 22h2	Before 10.0.19045.7184
Microsoft Windows 11 23h2	Before 10.0.22631.6936
Microsoft Windows 11 23h2	Before 10.0.22631.6936
Microsoft Windows Server 2022	Before 10.0.20348.5020
Microsoft Windows Server 2022 23h2	Before 10.0.25398.2274

Related CWEs

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27924

Source: secure@microsoft.com

Vendor Advisory

Timeline

No history available yet.