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 v4.0

7.2 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

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

EPSS

0.33% chance of exploitation in the next 30 days, 25th percentile

Published

2026-06-28

Updated

2026-07-18

Proof-of-concept exploits (1)

• bikini/exploitarium/tree/main/rustdesk-session-permission-pocs

References

• CVE Record
• NVD entry

Related

• CVE-2026-58049
• CVE-2026-58050
• CVE-2026-58051
• CVE-2026-58052
• CVE-2026-58053
• CVE-2026-58055