CVE-2026-30790

Summary

Improper Restriction of Excessive Authentication Attempts, Use of Password Hash With Insufficient Computational Effort vulnerability in rustdesk-server-pro RustDesk Server Pro rustdesk-server-pro on Windows, MacOS, Linux (Peer authentication, API login modules), rustdesk-server RustDesk Server (OSS) rustdesk-server on Windows, MacOS, Linux (Peer authentication, API login modules) allows Password Brute Forcing. This vulnerability is associated with program files src/server/connection.Rs and program routines Salt/challenge generation, SHA256(SHA256(pwd+salt)+challenge) verification.

This issue affects RustDesk Server Pro: through 1.7.5; RustDesk Server (OSS): through 1.1.15.

Affected Software

Weaknesses

• CWE-307: CWE-307 Improper Restriction of Excessive Authentication Attempts
• CWE-916: CWE-916 Use of Password Hash With Insufficient Computational Effort

Workarounds

Use long (16+ char) random passwords. Enable 2FA where available. Deploy rate-limiting (e.g., fail2ban on OSS 1.1.15+).

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: yes
  • Technical Impact: total

References

• https://github.com/rustdesk
• https://docs.google.com/document/d/e/2PACX-1vSds6jjpd38oO_yIAyd1HYtKNUuea-I-ozAPpGhYI7QgAU-QGJ7D8a4rOZVj1vmiUXV1EcdRHf9aZAW/pub
• https://www.vulsec.org/

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