CVE-2026-58056

Description

RustDesk gates incoming control messages on per-capability flags rather than on the session's authorized connection type, and a file-transfer session does not clear those flags. A peer holding only a valid FileTransfer authorization can inject keyboard and mouse input and reach the unguarded screenshot and display-capture handlers, acting outside its granted scope.

CVSS Vector

References

• https://github.com/bikini/exploitarium/tree/main/rustdesk-session-permission-pocs
• https://www.vulncheck.com/advisories/rustdesk-filetransfer-session-authorization-scope-bypass