CVE-2026-70228

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Out-of-Bounds Read in Desktop Window Manager

Publication date: 2026-10-13

Last updated on: 2026-10-16

Assigner: Microsoft Corporation

Description

Out-of-bounds read in Desktop Window Manager allows an authorized attacker to elevate privileges 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-2026-70228

EUVD

EUVD-2026-100131

Affected Vendors & Products

Vendor	Product	Version / Range
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 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

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 vulnerability is an out-of-bounds read flaw in the Desktop Window Manager component of Microsoft Windows. 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, potentially taking control of the affected system.

Impact Analysis

If exploited, this vulnerability could allow an attacker to gain elevated privileges on your system. This might enable them to install malicious software, view or delete sensitive data, or create new accounts with full user rights. The impact is limited to local attacks, so remote exploitation is not possible without prior access.

Mitigation Strategies

Apply the latest security updates from Microsoft to patch the Desktop Window Manager vulnerability. Monitor Microsoft's update guide for patches specific to affected Windows versions.

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