Is this vulnerability remotely exploitable over the internet?

Yes, but only by attackers who can observe the network path between the RustDesk Client and its server (for example, on shared networks, compromised routers, or inspection points). They do not need to interact with the client directly; passive sniffing of traffic can be enough.

Does an attacker need valid credentials or local access to the device?

No valid RustDesk credentials on the client are required. The main requirement is network-level access to capture traffic. Local access is not necessary if the attacker can monitor the relevant network segment or intermediary devices.

What is the safest general fix pattern for developers?

Redesign the protocol so that passwords or password-equivalent values are never sent in periodic heartbeat or sync messages, and ensure any necessary sensitive exchanges occur only over robustly authenticated, encrypted channels. Where possible, replace direct passwords with scoped, revocable tokens that carry minimal privilege.

Severity:

HIGH RISK

(7.5)

Cleartext Transmission of Sensitive Information (CWE-319) in RustDesk Client Heartbeat Sync

CVE-2026-30795

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:

Cleartext Transmission of Sensitive Information

CWE:

CWE-319

Impact:

Exposure of authentication-related secrets and session configuration data to network eavesdroppers

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Vulnerability Type

Category:

Cleartext Transmission of Sensitive Information

CWE:

CWE-319

Impact:

Exposure of authentication-related secrets and session configuration data to network eavesdroppers

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

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Cleartext Transmission of Sensitive Information (CWE-319) in RustDesk Client Heartbeat Sync

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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