CVE-2026-58056

HIGH 7.6

RustDesk - FileTransfer Session Authorization Scope Bypass

CVSS Score

7.6

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-863
Vendor	rustdesk
Product	rustdesk
Published	Jun 28, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

High

Availability

Low

Affected Versions

RustDesk / RustDesk

0 ≤ ff226f6d8013dee2de5a6553abaf67bf32b3e875

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

ashdfrkl