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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| rustdesk | rustdesk | < 1.5.0 | 1.5.0 |
Advisories 1
- WID-SEC-2026-3589 RustDesk: Schwachstelle ermöglicht Offenlegung von Informationen BSI CERT-Bund (WID) · Sep 27, 2026
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