CVE-2026-57850
RustDesk Missing Session Scope Enforcement Allows Out-of-Scope Control Message Injection
- State
- Published
- Severity
- 8.7 High
- Published
- Jul 10, 2026
- Updated
- Aug 11, 2026
- Reserved
- Jun 25, 2026
Description
RustDesk before 1.4.9 does not enforce a session's authorized connection scope on the server side, so a peer granted a limited session type (FileTransfer, PortForward, ViewCamera, or Terminal) can send control messages and login options reserved for a full Remote session. An authenticated remote peer can exploit this missing scope check to act outside its granted scope, injecting out-of-scope control messages to observe and control the host beyond the permissions it was given.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 8.3 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L | VulnCheck |
Weaknesses
- CWE-862 Missing Authorization
Affected Products
| Product | Versions |
|---|---|
RustDeskRustDesk |
|
References
- Fix Pull Request #15469patch
- Patch Commitpatch
- RustDesk 1.4.9 Releaserelease-notes
- Productproduct
- https://www.vulncheck.com/advisories/rustdesk-missing-session-scope-enforcement-allows-out-of-scope-control-message-injectionthird-party-advisory
- PoCtechnical-description
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