How widely exploitable is this vulnerability?

Exploitability primarily depends on an attacker's ability to get in the network path between RustDesk clients and their servers. In environments with untrusted networks, shared Wi‑Fi, or compromised routers, this significantly increases the risk of Adversary-in-the-Middle attacks.

Does an attacker need credentials or local access to exploit this?

No direct client credentials or local access are required. The attacker needs to control or influence network routing or access points so they can intercept and impersonate the remote server during TLS negotiation, taking advantage of the weakened certificate validation.

What is the safest general fix pattern for this issue?

The most robust fix is to enforce strict TLS certificate validation everywhere: remove or disable insecure options such as accepting invalid certificates, ensure hostname and trust chain checks are mandatory, and prevent production builds from including any configuration that bypasses these checks.

Severity:

HIGH RISK

(8.1)

Improper TLS Certificate Validation (CWE-295) in RustDesk Client HTTP API and Transport Modules

CVE-2026-30794

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:

Improper Certificate Validation

CWE:

CWE-295

Impact:

Adversary-in-the-Middle (AiTM) and Confidentiality/Integrity Compromise

Severity:

HIGH RISK

(8.1)

CVSS Version:

3.1

Vulnerability Type

Category:

Improper Certificate Validation

CWE:

CWE-295

Impact:

Adversary-in-the-Middle (AiTM) and Confidentiality/Integrity Compromise

Severity:

HIGH RISK

(8.1)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

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Improper TLS Certificate Validation (CWE-295) in RustDesk Client HTTP API and Transport 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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