RustDesk Missing Session Scope Enforcement Allows Out-of-Scope Control Message Injection
41Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 8.7epss 0.5%
from disclosure to weapon1 days
Published on NVDJul 10
1st PoC+1d
exploitation probability
0.5%top 59% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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.
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
Affected products
RustDesk · RustDeskpublic PoCs found — 1
githubgithub.com/sn0x-sharma/CVE-2026-57850★ 1⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://github.com/rustdesk/rustdeskhttps://github.com/rustdesk/rustdesk/commit/493b14ba78abc3dfb33f109c7f93c1c95a1dabc4https://github.com/rustdesk/rustdesk/pull/15469https://github.com/rustdesk/rustdesk/releases/tag/1.4.9https://github.com/sn0x-sharma/CVE-2026-57850https://www.vulncheck.com/advisories/rustdesk-missing-session-scope-enforcement-allows-out-of-scope-control-message-injection