CVE-2026-58056
RustDesk - FileTransfer Session Authorization Scope Bypass
- State
- Published
- Severity
- 7.2 High
- Published
- Jun 28, 2026
- Updated
- Jul 18, 2026
- Reserved
- Jun 28, 2026
Description
RustDesk gates incoming control messages on per-capability flags rather than on the session's authorized connection type, and a file-transfer session does not clear those flags. A peer holding only a valid FileTransfer authorization can inject keyboard and mouse input and reach the unguarded screenshot and display-capture handlers, acting outside its granted scope.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.2 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 7.6 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L | VulnCheck |
Weaknesses
- CWE-863 Incorrect Authorization
Affected Products
| Product | Versions |
|---|---|
RustDeskRustDesk |
|
References
- Proof of Conceptexploitthird-party-advisory
- VulnCheck Advisory: RustDesk - FileTransfer Session Authorization Scope Bypassthird-party-advisory
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