CVE-2026-57850 RustDesk Missing Session Scope Enforcement Allows Out-of-Scope Control Message Injection
An authenticated peer can inject out-of-scope control messages to observe and control the host beyond granted permissions in RustDesk.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-57850?
CVE-2026-57850 is a high-severity missing authorization vulnerability in RustDesk, published on 10 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-862
Which versions are affected by CVE-2026-57850?
How do I fix CVE-2026-57850?
No fix has been published for CVE-2026-57850 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-57850 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-57850 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-83jc-7j6x-wvj9.