CVE-2026-69884
Undergoing Analysis Undergoing Analysis - In Progress

Buffer Over-Read in Windows GDI Allows Local Privilege Escalation

Vulnerability report for CVE-2026-69884, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: Microsoft Corporation

Description

Buffer over-read in Windows GDI allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

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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
EUVD

Affected Vendors & Products

Showing 21 associated CPEs
Vendor Product Version / Range
Microsoft Windows 10 Version 1607 10.0.14393.0
Microsoft Windows 10 Version 1809 10.0.17763.0
Microsoft Windows 10 Version 21H2 10.0.19044.0
Microsoft Windows 10 Version 22H2 10.0.19045.0
Microsoft Windows 11 version 23H2 10.0.22631.0
Microsoft Windows 11 Version 23H2 10.0.22631.0
Microsoft Windows 11 Version 24H2 10.0.26100.0
Microsoft Windows 11 Version 25H2 10.0.26200.0
Microsoft Windows 11 version 26H1 10.0.28000.0
Microsoft Windows 11 Version 26H2 10.0.26300.0
Microsoft Windows Server 2012 6.2.9200.0
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0
Microsoft Windows Server 2012 R2 6.3.9600.0
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0
Microsoft Windows Server 2016 10.0.14393.0
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0
Microsoft Windows Server 2019 10.0.17763.0
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0
Microsoft Windows Server 2022 10.0.20348.0
Microsoft Windows Server 2025 10.0.26100.0
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0

Helpful Resources

Exploitability

CWE
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KEV
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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

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Executive Summary

This vulnerability is a buffer over-read in Windows GDI (Graphics Device Interface). It allows an authorized attacker with local access to elevate their privileges on the system. This means an attacker could gain higher-level permissions than originally intended.

Detection Guidance

Detection requires monitoring for unusual privilege escalation attempts or GDI-related crashes. Check Windows Event Logs for application crashes in GDI components (Event ID 1000, 1001). Use Process Monitor to track suspicious GDI API calls or memory access patterns. No specific commands are provided in the available resources.

Impact Analysis

If exploited, this vulnerability could allow an attacker to gain elevated privileges on your system. This could lead to unauthorized access to sensitive data, installation of malicious software, or further compromise of your system's security.

Compliance Impact

This vulnerability allows local privilege escalation through a buffer over-read in Windows GDI. Such attacks could enable unauthorized access to sensitive data or system functions, potentially violating compliance requirements for data protection standards like GDPR or HIPAA by exposing protected information or failing to maintain proper access controls.

Mitigation Strategies

Apply the latest Windows security updates from Microsoft Update immediately. Disable unnecessary GDI features if updates are not immediately available. Restrict local user permissions to reduce attack surface. Monitor for suspicious activity post-update.

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EPSS Chart