Information Disclosure in Windows Win32K

Publication date: 2026-09-08

Last updated on: 2026-09-24

Assigner: Microsoft Corporation

Description

Exposure of sensitive system information to an unauthorized control sphere in Windows Win32K allows an authorized attacker to disclose information locally.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-08

Last Modified

2026-09-24

Generated

2026-09-29

AI Q&A

2026-09-10

EPSS Evaluated

2026-09-27

NVD

CVE-2026-69832

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_win32k	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-497	The product does not properly prevent sensitive system-level information from being accessed by unauthorized actors who do not have the same level of access to the underlying system as the product does.

Attack-Flow Graph

Executive Summary

This vulnerability involves the exposure of sensitive system information in Windows Win32K to an unauthorized control sphere. An authorized attacker could exploit this to disclose information locally on the affected system.

Impact Analysis

An attacker with local access could exploit this to gain access to sensitive system information, potentially leading to further attacks or data breaches. The impact is limited to local disclosure of information.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Win32K vulnerability. Monitor Microsoft's security advisories for updates and ensure all systems are updated promptly.

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