CVE-2026-73102

RustDesk Path Traversal via macOS Clipboard File-Paste

MEDIUM
5.7
CVSS Score
Published: August 26, 2026 at 01:00 PM UTC
Updated: October 1, 2026 at 03:20 PM UTC
1 product affected across 1 vendorRustDesk

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Severity
MEDIUM5.7
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

1.3.9 ≤ v ≤ 1.4.91.3.9
Vendor states this is fixed in 6f1eb164d616e0e2bfbcf8c6b7c8083b09d7ed06 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.7MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-22

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