Read the docs
TI-2026-41656 Aliases CVE-2026-57850GHSA-83jc-7j6x-wvj9

RustDesk Missing Session Scope Enforcement Allows Out-of-Scope Control Message Injection

Priority HIGH 73CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

RustDesk before 1.4.9 does not enforce a session's authorized connection scope on the server side, so a peer granted a limited session type (FileTransfer, PortForward, ViewCamera, or Terminal) can send control messages and login options reserved for a full Remote session. An authenticated remote peer can exploit this missing scope check to act outside its granted scope, injecting out-of-scope control messages to observe and control the host beyond the permissions it was given.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00498 42nd percentileScored 2026-11-07
Fix Fixed RustDesk (RustDesk): 1.4.9

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
rustdesk-clientRustDeskbefore 1.4.91.4.9Patch availableCNA
  • RustDesk Vendorrustdesk-client Affected before 1.4.9 Fixed in 1.4.9 Patch available CNA

Remediation

  • Fix · CNA RustDesk (RustDesk) Fixed in 1.4.9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-57850
  2. 2026-10-03 Alias added: GHSA-83jc-7j6x-wvj9

References

Patch 2

Other 3

  • TI-2024-16591 A default installation of RustDesk 1.2.3 on Windows places a WDKTestCert certificate… CVSS 3.1CRITICAL 9.8
  • TI-2026-23626 RustDesk HTTP Client Silently Accepts Invalid TLS Certificates After Handshake Failure CVSS 4.0HIGH 8.7
  • TI-2026-23624 RustDesk Client Blindly Merges Unauthenticated Strategy Payloads, Bypassing Local Security Settings CVSS 4.0HIGH 8.3
  • TI-2026-23621 RustDesk Encrypts Local Passwords with World-Readable Machine ID and Fixed Zero Nonce (XSalsa20-Poly1305) CVSS 4.0HIGH 8.2
  • TI-2026-03102 RustDesk Server Generates Config Strings Using Reversible Encoding (Base64 + Reverse) Instead of Encryption CVSS 4.0HIGH 8.7
  • TI-2026-23629 RustDesk Client Accepts Unauthenticated stop-service Command via Strategy Payload CVSS 4.0HIGH 8.2
See all 19 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences