How broadly exploitable is this vulnerability?

The issue is broadly exploitable wherever RustDesk Server authentication endpoints are reachable from untrusted networks. An attacker only needs network access to the server and the ability to send repeated login attempts; no prior credentials are required.

Does an attacker need valid user accounts or any initial access?

No existing account is strictly necessary. Attackers can target known or guessed identifiers (e.g., usernames, peer IDs, or API accounts) and attempt passwords until one succeeds, particularly if naming patterns or default accounts are predictable.

What is the safest general fix pattern for developers and operators?

The safest pattern is to combine strong rate limiting and lockout mechanisms with an adaptive, resource-intensive password hashing scheme. Operationally, treat all authentication endpoints as high-value resources, enforce hard limits on failed attempts, and update password handling to use modern, tunable password hash functions.

Severity:

CRITICAL RISK

(9.8)

Excessive Authentication Attempts & Weak Password Hashing (CWE-307, CWE-916) in RustDesk Server Authentication Modules

CVE-2026-30790

Published:

Mar 5, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Authentication and Password Brute Forcing

CWE:

CWE-307;CWE-916

Impact:

Account Compromise via Online Password Brute Force

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Authentication and Password Brute Forcing

CWE:

CWE-307;CWE-916

Impact:

Account Compromise via Online Password Brute Force

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

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Excessive Authentication Attempts & Weak Password Hashing (CWE-307, CWE-916) in RustDesk Server Authentication Modules

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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