CVE-2026-3598 PUBLISHED

RustDesk Server Generates Config Strings Using Reversible Encoding (Base64 + Reverse) Instead of Encryption

Assigner: VULSec
Reserved: 05.03.2026 Published: 05.03.2026 Updated: 05.03.2026

Use of a Broken or Risky Cryptographic Algorithm vulnerability in rustdesk-server-pro RustDesk Server Pro rustdesk-server-pro on Windows, MacOS, Linux (Config string generation, web console export modules) allows Retrieve Embedded Sensitive Data. This vulnerability is associated with program routines Config export/generation routines.

This issue affects RustDesk Server Pro: through 1.7.5.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS Score: 8.7

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	rustdesk-server-pro
Product	RustDesk Server Pro
Versions	Default: affected affected from 0 to 1.7.5 (incl.)

Affected Configurations

Default — any deployment using "Encrypted Config" strings

Exploits

PoC available. Trivially exploitable.

Workarounds

Treat config strings as public; restrict distribution to trusted channels only

Solutions

Implement AES-256-GCM AEAD or equivalent authenticated encryption

Credits

Erez Kalman finder
Erez Kalman reporter

References

https://rustdesk.com/docs/en/client/

Problem Types

CWE-327 Use of a Broken or Risky Cryptographic Algorithm CWE
CWE-684 CWE

Impacts

CAPEC-37 Retrieve Embedded Sensitive Data