CVE-2026-45604

Published: Jun 9, 2026Modified: Jun 11, 2026

5.5

Vector

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

Exploitability: 1.8 / Impact: 3.6

Source: secure@microsoft.com

Description

Out-of-bounds read in Windows Application Identity (AppID) Subsystem allows an authorized attacker to disclose information locally.

Affected (9)

Products: Microsoft: Windows 11 23h2, Windows 11 24h2, Windows 11 25h2, Windows 11 26h1, Windows Server 2025

5 products

Windows 11 23h2

Windows 11 24h2

Windows 11 25h2

Windows 11 26h1

Windows Server 2025

Configuration A

9 vulnerable

Vulnerable Software	Affected Versions
Microsoft Windows 11 23h2	Before 10.0.22631.7219
Microsoft Windows 11 23h2	Before 10.0.22631.7219
Microsoft Windows 11 24h2	Before 10.0.26100.8655
Microsoft Windows 11 24h2	Before 10.0.26100.8655
Microsoft Windows 11 25h2	Before 10.0.26200.8655
Microsoft Windows 11 25h2	Before 10.0.26200.8655
Microsoft Windows 11 26h1	Before 10.0.28000.2269
Microsoft Windows 11 26h1	Before 10.0.28000.2269
Microsoft Windows Server 2025	Before 10.0.26100.32995

Related CWEs

Out-of-bounds Read

The product reads data past the end, or before the beginning, of the intended buffer.

References (1)

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45604

Source: secure@microsoft.com

Vendor Advisory

Timeline

No history available yet.