Vulnerability · Published Sep 25, 2026 · Assigned by VulnCheck
CVE-2026-100417RustDesk before 1.5.0 One-Way File Transfer Bypass
Low 3.1
In plain English
A low-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 11% of all known vulnerabilities).
Severity (CVSS 3.1)3.1Low
Exploit odds (30 days)0.2%top 89.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
RustDesk before 1.5.0 on Windows fails to enforce the one-way file transfer option against peer clipboard file requests, allowing authenticated peers to read files from the host clipboard. Attackers can send FormatDataRequest and FileContentsRequest messages to retrieve copied files by guessing the FileGroupDescriptorW format identifier.
Affected products (as reported)
Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
References
- https://github.com/rustdesk/rustdesk/pull/16333 issue-tracking, patch
- https://github.com/rustdesk/rustdesk/commit/f299fb9906006247863250d7dfaa016f29eef7a4 patch
- https://github.com/rustdesk/rustdesk/blob/1.4.9/src/ui_cm_interface.rs#L618-L638 technical-description
- https://github.com/rustdesk/rustdesk/blob/1.4.9/libs/clipboard/src/windows/wf_cliprdr.c#L2728-L2770 technical-description
- https://github.com/rustdesk/rustdesk product
- VulnCheck Advisory: RustDesk before 1.5.0 One-Way File Transfer Bypass third-party-advisory