Vulnerability · Published Mar 5, 2026 · Assigned by VULSec
CVE-2026-30785RustDesk Encrypts Local Passwords with World-Readable Machine ID and Fixed Zero Nonce (XSalsa20-Poly1305)
High 8.2
In plain English
A high-severity prototype pollution in RustDesk Client from rustdesk-client. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities).
Official description
Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution'), Use of Password Hash With Insufficient Computational Effort vulnerability in rustdesk-client RustDesk Client rustdesk, hbb_common on Windows, MacOS, Linux (Password security module, config encryption, machine UID modules) allows Retrieve Embedded Sensitive Data. This vulnerability is associated with program files hbb_common/src/password_security.Rs, hbb_common/src/config.Rs, hbb_common/src/lib.Rs (get_uuid), machine-uid/src/lib.Rs and program routines symmetric_crypt(), encrypt_str_or_original(), decrypt_str_or_original(), get_uuid(), get_machine_id(). This issue affects RustDesk Client: through 1.4.5.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| rustdesk-client | RustDesk Client | 0 – through 1.4.5 |
Weakness: CWE-257, CWE-1321, CWE-323, CWE-916 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
References
- https://github.com/rustdesk/rustdesk/discussions/9229 technical-description, x_--config documentation
- https://github.com/rustdesk/rustdesk/discussions/4979 technical-description, x_--config documentation
- https://docs.google.com/document/d/e/2PACX-1vSds6jjpd38oO_yIAyd1HYtKNUuea-I-ozAPpGhYI7QgAU-QGJ7D8a4rOZVj1vmiUXV1EcdRHf9aZAW/pub third-party-advisory, exploit
- https://www.vulsec.org/ vdb-entry, third-party-advisory