CVE-2026-58056High· 7.6▾ Twilight

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

▾ Twilight zone — High severity, or a signal on a lesser flaw

Depth score42/ 100 · Moderate

impact 41.8 · likelihood 0.1 · exploitation 0

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Proof of concept

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Published

Jun 28, 2026

Updated

Jul 18, 2026

CVSS

7.6

Vendor

—

Product

—

CWE

CWE-863

Depth score

42 · Moderate

EPSS

0.33% · p26

Platforms

—

Source

NVD

Vector

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

EPSS history

Exploit-prediction probability, daily snapshots since Aug 3.

0.2% → 0.3%▲ 0.1%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

4 events · 57 days

Jun 28, 2026Published
Disclosed via NVD
Jul 18, 2026Record revised
Last analysed / modified upstream
Aug 3, 2026EPSS first tracked
0.2%
Aug 24, 2026EPSS peak
0.2% → 0.3%

CWE-863 #nvd

Full technical detail▾

Overview

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.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd

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