CVE-2026-69844

Analyzed Analyzed - Analysis Complete

Out-of-Bounds Read in Windows Win32K

Publication date: 2026-09-08

Last updated on: 2026-09-24

Assigner: Microsoft Corporation

Description

Out-of-bounds read in Windows Win32K allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

Probability:
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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-2026-69844

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows	-

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-125	The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This is an out-of-bounds read vulnerability in Windows Win32K. An authorized attacker can exploit it to elevate their privileges locally on an affected system.

Detection Guidance

Detection typically requires monitoring for unusual privilege escalation attempts or analyzing system logs for signs of exploitation. Use Windows Event Viewer to check for suspicious events in Security and System logs. Commands like 'wevtutil qe System /q:"*[System[(EventID=4624)]]" /f:text /c:50' can help review recent logon events.

Impact Analysis

An attacker could gain higher-level permissions on your system, potentially allowing them to install programs, view or delete data, or create new accounts with full user rights.

Mitigation Strategies

Apply the latest Windows security updates from Microsoft Update immediately. Disable unnecessary services and restrict user permissions to minimize attack surface. Monitor for unusual activity and isolate affected systems if exploitation is suspected.

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