PT-2026-23456 · Unknown · Rustdesk Server+1

Erez Kalman · CVE-2026-30790 · Published 2026-03-05 · Updated 2026-06-22

Positive Technologies (AI Summary)

CVSS v4.0

9.3

Critical

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions RustDesk Server Pro versions through 1.7.5 RustDesk Server (OSS) versions through 1.1.15

Description The software contains a flaw related to insufficient restriction of excessive authentication attempts and the use of a password hash with insufficient computational effort, potentially allowing password brute forcing. The issue impacts the peer authentication and API login modules. The vulnerability is linked to code within the src/server/connection.Rs file, specifically concerning salt and challenge generation, and the SHA256(SHA256(pwd+salt)+challenge) verification process.

Recommendations Update RustDesk Server Pro to a version later than 1.7.5. Update RustDesk Server (OSS) to a version later than 1.1.15.

Exploit

Fix

Improper Restriction of Excessive Authentication Attempts

Cleartext Transmission of Sensitive Information

Weakness Enumeration

CWE-307

CWE-916

CWE-319

Related Identifiers

CVE-2026-30790

Affected Products

Rustdesk Server

Rustdesk Server Pro

References · 14

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30790.json · Exploit
• 🔥 https://docs.google.com/document/d/e/2PACX-1vSds6jjpd38oO_yIAyd1HYtKNUuea-I-ozAPpGhYI7QgAU-QGJ7D8a4rOZVj1vmiUXV1EcdRHf9aZAW/pub · Exploit
• https://osv.dev/vulnerability/CVE-2026-30790 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-30790 · Security Note
• https://github.com/rustdesk/rustdesk-server/releases · Note
• https://github.com/rustdesk/rustdesk-server · Note
• https://github.com/rustdesk/rustdesk-server-pro/releases · Note
• https://t.me/cveNotify/171404 · Telegram Post
• https://twitter.com/cyberbivash/status/2029617583129764163 · Twitter Post
• https://twitter.com/CVEnew/status/2029654730218095094 · Twitter Post
• https://t.me/cveNotify/171423 · Telegram Post
• https://t.me/CVEtracker/46461 · Telegram Post
• https://vulsec.org · Note
• https://github.com/rustdesk · Note