RustDesk up to 1.4.9 Clipboard path traversal

Summaryinfo

A vulnerability was found in RustDesk up to 1.4.9. It has been rated as problematic. This issue affects some unknown processing of the component Clipboard. This manipulation causes path traversal. This vulnerability appears as CVE-2026-73102. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in RustDesk up to 1.4.9. It has been declared as problematic. Affected by this vulnerability is an unknown function of the component Clipboard. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect integrity. The summary by CVE is:

RustDesk versions 1.3.9 through 1.4.9 contain a path traversal vulnerability in the macOS clipboard file-paste code path. The application accepts peer-supplied file descriptor names and joins them to the selected target directory without requiring normalized relative paths. A remote peer in an active clipboard file-paste session can use parent-directory components or absolute paths to write files outside the intended target directory at locations writable by the RustDesk process. Commit 6f1eb16 fixes the issue by validating descriptor names and safely joining paths.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-73102 since 08/10/2026. The exploitation appears to be easy. The attack can be launched remotely. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

Applying the patch 6f1eb164d616e0e2bfbcf8c6b7c8083b09d7ed06 is able to eliminate this problem.

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Productinfo

Name

• RustDesk

Version

• 1.4.0
• 1.4.1
• 1.4.2
• 1.4.3
• 1.4.4
• 1.4.5
• 1.4.6
• 1.4.7
• 1.4.8
• 1.4.9

Website

• Product: https://github.com/rustdesk/rustdesk/

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