---
id: CVE-2026-58056
title: >-
  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
summary: >-
  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 …
severity: high
cvss: 7.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L'
cwe:
  - CWE-863
published: '2026-06-28'
updated: '2026-07-18'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-58056'
references:
  - url: >-
      https://github.com/bikini/exploitarium/tree/main/rustdesk-session-permission-pocs
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/rustdesk-filetransfer-session-authorization-scope-bypass
    label: disclosure@vulncheck.com
tags:
  - nvd
epss: 0.00326
epssPercentile: 0.23143
ingestedAt: '2026-07-18T21:25:07.160Z'
---

## 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.