CVE-2026-3598
Published: 05 March 2026
Summary
CVE-2026-3598 is a high-severity Use of a Broken or Risky Cryptographic Algorithm (CWE-327) vulnerability in Rustdesk Rustdesk Server. Its CVSS base score is 8.7 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 13.1th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified are NIST 800-53 SC-13 (Cryptographic Protection) and SI-2 (Flaw Remediation).
Deeper analysis
CVE-2026-3598 is a Use of a Broken or Risky Cryptographic Algorithm vulnerability (CWE-327, CWE-684) in the rustdesk-server-pro component of RustDesk Server Pro, affecting versions through 1.7.5 on Windows, macOS, and Linux. The issue resides in the config string generation and web console export modules, where flawed cryptographic routines enable the retrieval of embedded sensitive data.
The vulnerability carries a CVSS v3.1 base score of 7.5 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N), indicating it is exploitable over the network with low complexity, no privileges or user interaction required. Remote attackers without authentication can retrieve highly sensitive configuration data exported or generated by the affected modules, potentially exposing credentials or other secrets.
Mitigation details and further advisories are available in the referenced publications, including a Google Docs advisory at https://docs.google.com/document/d/e/2PACX-1vSds6jjpd38oO_yIAyd1HYtKNUuea-I-ozAPpGhYI7QgAU-QGJ7D8a4rOZVj1vmiUXV1EcdRHf9aZAW/pub, RustDesk client documentation at https://rustdesk.com/docs/en/client/, and Vulsec at https://www.vulsec.org/. The vulnerability was published on 2026-03-05.
OWASP Top 10 for Web (2025)
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-9823
Vulnerability details
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…
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routines. This issue affects RustDesk Server Pro: through 1.7.5.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise TechniquesAI
Why these techniques?
Remote unauthenticated exploit of public-facing server (web console/export) due to broken crypto directly enables retrieval of embedded credentials from config data.
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Affected Assets
Mitigating Controls
Mitigating Controls (NIST 800-53 r5) AI
Requires implementation of approved cryptographic mechanisms, directly preventing the use of broken or risky algorithms in config string generation and web console export modules.
Mandates timely identification, reporting, and remediation of flaws, addressing the specific cryptographic vulnerability in rustdesk-server-pro.
Enables vulnerability scanning to identify and prioritize crypto weaknesses like those in CVE-2026-3598 for remediation.