CVE-2026-58056

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 4.0

7.2CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N

CVSS 3.1

7.6CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L

EPSS

0.3% chance of exploitation in the next 30 days; higher than 25% of CVEs (scores of 2026-10-25)

CWE

CWE-863

Published

2026-06-28

Modified

2026-10-25

Record from

the NVD, synced 2026-10-25

References

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

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