Information disclosure in Windows and Windows Server - CVE-2026-42971

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Main Vulnerability Database Vulnerabilities #VU134320

Information disclosure in Windows and Windows Server - CVE-2026-42971

Published: June 11, 2026


Vulnerability identifier: #VU134320
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2026-42971
CWE-ID: CWE-200
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Microsoft
Affected software:
Windows
Windows Server

Detailed vulnerability description

The vulnerability allows a local user to bypass certain security restrictions.

The vulnerability exists due to usage of uninitialized resources in Windows Push Notification. A local user can trigger uninitialized usage of resources and gain access to sensitive information on the system.


How to mitigate CVE-2026-42971

Install updates from vendor's website.

Sources