Microsoft Windows 11 23H2/11 24H2/11 25H2/11 26H1 NTFS path traversal

Summaryinfo

A vulnerability, which was classified as problematic, was found in Microsoft Windows 11 23H2/11 24H2/11 25H2/11 26H1. The impacted element is an unknown function of the component NTFS. Such manipulation leads to path traversal. This vulnerability is uniquely identified as CVE-2026-69425. Local access is required to approach this attack. No exploit exists. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Microsoft Windows 11 23H2/11 24H2/11 25H2/11 26H1. Affected by this issue is some unknown functionality of the component NTFS. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is integrity. CVE summarizes:

Improper link resolution before file access ('link following') in Windows NTFS allows an authorized attacker to perform tampering locally.

The advisory is available at msrc.microsoft.com. This vulnerability is handled as CVE-2026-69425 since 08/03/2026. The exploitation is known to be easy. Local access is required to approach this attack. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/08/2026). This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

Applying a patch is able to eliminate this problem.

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Productinfo

Type

• Operating System

Vendor

• Microsoft

Name

• Windows

Version

• 11 23H2
• 11 24H2
• 11 25H2
• 11 26H1

License

• commercial

Website

• Vendor: https://www.microsoft.com/
• Product: https://www.microsoft.com/en-us/windows

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