CVE-2026-69942

Analyzed Analyzed - Analysis Complete

Buffer Over-Read in Windows Overlay Filter Enables Local Code Execution

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: Microsoft Corporation

Description

Buffer over-read in Windows Overlay Filter allows an authorized attacker to execute code locally.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-10-13

Last Modified

2026-10-16

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-69942

EUVD

EUVD-2026-99108

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	windows_11_23h2	to 10.0.22631.7652 (exc)
microsoft	windows_11_23h2	to 10.0.22631.7652 (exc)
microsoft	windows_11_24h2	to 10.0.26100.9711 (exc)
microsoft	windows_11_24h2	to 10.0.26100.9711 (exc)
microsoft	windows_11_25h2	to 10.0.26200.9711 (exc)
microsoft	windows_11_25h2	to 10.0.26200.9711 (exc)
microsoft	windows_11_26h1	to 10.0.28000.3231 (exc)
microsoft	windows_11_26h1	to 10.0.28000.3231 (exc)
microsoft	windows_11_26h2	to 10.0.26300.9711 (exc)
microsoft	windows_11_26h2	to 10.0.26300.9711 (exc)
microsoft	windows_server_2025	to 10.0.26100.33650 (exc)
microsoft	windows_server_2022	to 10.0.20348.5761 (exc)

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 is a buffer over-read vulnerability in the Windows Overlay Filter. An authorized attacker can exploit it to execute code locally on an affected system by reading beyond the intended buffer boundaries.

Impact Analysis

An attacker could gain control of your system, install malware, steal data, or perform other malicious actions. Since it requires local access, physical or network access to the system is needed.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, potentially violating GDPR (data protection) and HIPAA (health information privacy) requirements. Organizations must patch systems to maintain compliance.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Windows Overlay Filter vulnerability. Monitor Microsoft's update guide for patches and install them as soon as available.

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