CVE-2026-57850Public exploitNetwork attack vector

Authenticated host control via unenforced session scope

Published Jul 10, 2026 · Updated Jul 10, 2026

Missing authorization in RustDesk before 1.4.9 allows remote authenticated users to exceed a limited session's control scope. In src/server/connection.rs, the authorized-message gate tests only self.authorized and does not compare each message or login option with AuthConnType. Authorization for FileTransfer, PortForward, ViewCamera, or Terminal is sufficient to inject remote-only input or screenshot requests, exposing the host screen and keyboard or mouse control.

CVSS severity8.7
High
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in RustDesk before 1.4.9 allows remote authenticated users to exceed a limited session's control scope. In src/server/connection.rs, the authorized-message gate tests only self.authorized and does not compare each message or login option with AuthConnType. Authorization for FileTransfer, PortForward, ViewCamera, or Terminal is sufficient to inject remote-only input or screenshot requests, exposing the host screen and keyboard or mouse control.

The record

CVE
CVE-2026-57850
Published
Jul 10, 2026
Updated
Jul 10, 2026
Vendor
RustDesk
Product
RustDesk
Classifications
CWE-862, T1219
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <1.4.9

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

RustDesk · RustDeskversion=0 <1.4.9

Published CVSS scores

8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
8.3VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
T1219Remote Access Software

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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