CVE-2026-69316

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Buffer Over-Read in Windows Overlay Filter

Publication date: 2026-09-08

Last updated on: 2026-09-08

Assigner: Microsoft Corporation

Description

Buffer over-read in Windows Overlay Filter allows an authorized attacker to disclose information locally.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-08

Last Modified

2026-09-08

Generated

2026-09-09

AI Q&A

2026-09-09

EPSS Evaluated

N/A

NVD

CVE-2026-69316

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_overlay_filter	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-126	The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is a buffer over-read issue in the Windows Overlay Filter. It allows an authorized attacker to read beyond the intended memory buffer, potentially exposing sensitive information stored in memory.

Impact Analysis

An attacker could exploit this to access confidential data on your system, such as passwords or personal files, if they have local access. The impact is limited to information disclosure and does not allow code execution or system takeover.

Compliance Impact

This vulnerability could lead to unauthorized data exposure, violating GDPR or HIPAA if personal or health data is leaked. Organizations may face compliance penalties due to insufficient protection against information disclosure.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Windows Overlay Filter vulnerability. Monitor Microsoft's security advisories for patches and install them promptly.

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