CVE-2026-57850

RustDesk Missing Session Scope Enforcement Allows Out-of-Scope Control Message Injection

Published Jul 10, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title RustDesk before 1.4.9 Missing Session Scope Enforcement Allows Out-of-Scope Control Message Injection RustDesk Missing Session Scope Enforcement Allows Out-of-Scope Control Message Injection
CPEs cpe:2.3:a:rustdesk:rustdesk:*:*:*:*:*:*:*:* cpe:2.3:a:rustdesk:rustdesk:*:*:*:*:webclient:*:*:*
References
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title RustDesk before 1.4.9 Missing Session Scope Enforcement Allows Out-of-Scope Control Message Injection
First Time appeared Rustdesk
Rustdesk rustdesk
Weaknesses CWE-862
CPEs cpe:2.3:a:rustdesk:rustdesk:*:*:*:*:*:*:*:*
Vendors & Products Rustdesk
Rustdesk rustdesk
References
Metrics cvssV3_1

{'score': 8.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L'}

cvssV4_0

{'score': 8.7, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 8, 2026, 2:06 PM
Reserved
Jun 25, 2026, 6:48 PM
Status
Deferred
Published
Jul 10, 2026, 8:16 PM
Modified
Aug 11, 2026, 2:17 PM