CVE-2026-30796
Received Received - Intake
Cleartext Transmission in RustDesk Server Pro Enables Data Sniffing

Publication date: 2026-03-05

Last updated on: 2026-03-25

Assigner: VULSec Labs

Description
Cleartext Transmission of Sensitive Information vulnerability in rustdesk-server-pro RustDesk Server Pro rustdesk-server-pro on Windows, MacOS, Linux (Address book sync API modules) allows Sniffing Attacks. This vulnerability is associated with program files Closed source — API endpoint handling heartbeat sync and program routines Heartbeat API handler (accepts preset-address-book-password in plaintext). This issue affects RustDesk Server Pro: through 1.7.5.
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Meta Information
Published
2026-03-05
Last Modified
2026-03-25
Generated
2026-06-16
AI Q&A
2026-03-05
EPSS Evaluated
2026-06-15
NVD
CVE-2026-30796
EUVD
EUVD-2026-9836
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
rustdesk rustdesk_server to 1.7.5 (inc)
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-319 The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.
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Executive Summary

This vulnerability is a Cleartext Transmission of Sensitive Information issue found in rustdesk-server-pro, specifically in the RustDesk Server Pro software on Windows, MacOS, and Linux platforms. It affects the Address book sync API modules, where sensitive information such as the preset-address-book-password is transmitted in plaintext through the Heartbeat API handler. This allows attackers to perform sniffing attacks by intercepting this unencrypted sensitive data during transmission.

Impact Analysis

The impact of this vulnerability is that an attacker who can intercept network traffic between the client and the RustDesk Server Pro can capture sensitive information like passwords transmitted in cleartext. This can lead to unauthorized access to address book data or other sensitive resources managed by the server, potentially compromising user privacy and security.

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