CVE-2026-42896

HIGH

Microsoft Windows 11 Version 24H2 - Windows DWM Core Library Elevation of Privilege Vulnerability

Title source: rule
STIX 2.1

Description

Integer overflow or wraparound in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
Windows DWM Core Library Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42896

Scores

CVSS v3 7.8
EPSS 0.0007
EPSS Percentile 20.8%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-122 CWE-190
Status published
Products (9)
Microsoft/Windows 11 Version 24H2 10.0.26100.0 - 10.0.26100.8457
Microsoft/Windows 11 Version 25H2 10.0.26200.0 - 10.0.26200.8457
Microsoft/Windows 11 version 26H1 10.0.28000.0 - 10.0.28000.2113
Microsoft/Windows Server 2025 10.0.26100.0 - 10.0.26100.32860
Microsoft/Windows Server 2025 (Server Core installation) 10.0.26100.0 - 10.0.26100.32860
microsoft/windows_11_24h2 < 10.0.26100.8457 (2 CPE variants)
microsoft/windows_11_25h2 < 10.0.26200.8457 (2 CPE variants)
microsoft/windows_11_26h1 < 10.0.28000.2113 (2 CPE variants)
microsoft/windows_server_2025 < 10.0.26100.32860
Published May 12, 2026
Tracked Since May 12, 2026