CVE-2026-100388
RustDesk before 1.5.0 Missing Authorization Check on Incoming File Clipboard Messages
rustdesk rustdesk
CVSS
5.3MediumExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.18%Chance of exploitation activity in the next 30 days, higher than 6% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 1.5.0rustdeskCVE List
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
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.
Text from CVE List
Affected versions 2
- rustdeskaffected: all versions before 1.5.0CVE List
- rustdeskunaffected: 1.5.0CVE List
References 5
- github.com/rustdesk/rustdesk/pull/16333Fixvia CVE List
- github.com/rustdesk/rustdesk/commit/f299fb9906006247863250d7dfaa016f29eef7a4Fixvia CVE List
- vulncheck.com/advisories/rustdesk-before-1.5.0-missing-authorization-check-on-incoming-file-clipboard-messagesAdvisoryvia CVE List
- github.com/rustdesk/rustdesk/blob/1.4.9/src/server/connection.rs#L3074-L3092Referencevia CVE List
- github.com/rustdesk/rustdeskReferencevia CVE List