CVE-2026-69689
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Out-of-Bounds Read in Windows Win32K Kernel Driver

Publication date: 2026-09-08

Last updated on: 2026-09-09

Assigner: Microsoft Corporation

Description
Out-of-bounds read in Windows Win32K allows an authorized attacker to elevate privileges over a network.

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Meta Information

Published
2026-09-08
Last Modified
2026-09-09
Generated
2026-09-09
AI Q&A
2026-09-09
EPSS Evaluated
N/A
NVD
CVE-2026-69689

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
microsoft windows *-*

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.
CWE-121 A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

Attack-Flow Graph

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Executive Summary

This vulnerability is an out-of-bounds read flaw in Windows Win32K, a core component of the Windows operating system. An authorized attacker can exploit this to elevate their privileges over a network, potentially gaining higher-level access to the system.

Impact Analysis

If exploited, this vulnerability could allow an attacker to gain elevated privileges on your system. This means they might access sensitive data, install malicious software, or perform unauthorized actions without proper authorization.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the out-of-bounds read vulnerability in Win32K. Monitor Microsoft's update guide for the specific patch release.

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