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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.

PUBLISHED Reserved 2026-06-25 | Published 2026-07-10 | Updated 2026-07-10 | Assigner VulnCheck




HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

HIGH: 8.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

Problem types

Missing Authorization

Product status

Default status
affected

Any version before 1.4.9
affected

Credits

sn0x-sharma reporter

References

github.com/rustdesk/rustdesk/pull/15469 (Fix Pull Request #15469) issue-tracking

github.com/...ommit/493b14ba78abc3dfb33f109c7f93c1c95a1dabc4 (Patch Commit) patch

github.com/rustdesk/rustdesk/releases/tag/1.4.9 (RustDesk 1.4.9 Release) release-notes

github.com/rustdesk/rustdesk (Product) product

cve.org (CVE-2026-57850)

nvd.nist.gov (CVE-2026-57850)

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