Vulnerability · Published Sep 25, 2026 · Assigned by VulnCheck
CVE-2026-100388RustDesk before 1.5.0 Missing Authorization Check on Incoming File Clipboard Messages
Medium 5.4
In plain English
A medium-severity missing authorization in rustdesk from rustdesk. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities).
Severity (CVSS 3.1)5.4Medium
Exploit odds (30 days)0.2%top 92.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
RustDesk versions before 1.5.0 fail to properly validate file transfer permissions on incoming file clipboard messages in the Cliprdr message handler on Linux and macOS. Authenticated remote peers with disabled file transfer permissions can place files onto the host clipboard and retrieve copied files and contents from the process-wide clipboard cache.
Affected products (as reported)
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
References
- Pull Request #16333 issue-tracking, patch
- Patch Commit patch
- https://github.com/rustdesk/rustdesk/blob/1.4.9/src/server/connection.rs#L3074-L3092 technical-description
- https://github.com/rustdesk/rustdesk product
- VulnCheck Advisory: RustDesk before 1.5.0 Missing Authorization Check on Incoming File Clipboard Messages third-party-advisory