CVE-2026-70567

Published: Sep 8, 2026Modified: Sep 16, 2026

7.0

Vector

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

Exploitability: 1.0 / Impact: 5.9

Source: secure@microsoft.com (Secondary)

Description

Double free in Windows Display Enhancement Service allows an authorized attacker to elevate privileges locally.

Affected (7)

Products: Microsoft: Windows 11 24h2, Windows 11 25h2, Windows 11 26h1, Windows Server 2025

4 products

Windows 11 24h2

Windows 11 25h2

Windows 11 26h1

Windows Server 2025

Configuration A

7 vulnerable

Vulnerable Software	Affected Versions
Microsoft Windows 11 24h2	version < 10.0.26100.9445
Microsoft Windows 11 24h2	version < 10.0.26100.9445
Microsoft Windows 11 25h2	version < 10.0.26200.9445
Microsoft Windows 11 25h2	version < 10.0.26200.9445
Microsoft Windows 11 26h1	version < 10.0.28000.2954
Microsoft Windows 11 26h1	version < 10.0.28000.2954
Microsoft Windows Server 2025	version < 10.0.26100.33438

Related CWEs

The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70567

Source: secure@microsoft.com

Vendor AdvisoryPatch

Timeline

No history available yet.