CVE-2026-57850
RustDesk Missing Session Scope Enforcement Allows Out-of-Scope Control Message Injection
CVSS Score
8.3
EPSS Score
0.4%
EPSS Percentile
32th
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.
| CWE | CWE-862 |
| Vendor | rustdesk |
| Product | rustdesk |
| Published | Jul 10, 2026 |
| Last Updated | Aug 11, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
Low
Affected Versions
RustDesk / RustDesk
0 < 1.4.9
References
github.com: https://github.com/rustdesk/rustdesk/pull/15469 github.com: https://github.com/rustdesk/rustdesk/commit/493b14ba78abc3dfb33f109c7f93c1c95a1dabc4 github.com: https://github.com/rustdesk/rustdesk/releases/tag/1.4.9 github.com: https://github.com/rustdesk/rustdesk vulncheck.com: https://www.vulncheck.com/advisories/rustdesk-missing-session-scope-enforcement-allows-out-of-scope-control-message-injection github.com: https://github.com/sn0x-sharma/CVE-2026-57850
Credits
sn0x-sharma