CVE-2026-30792 PUBLISHED

RustDesk Client Blindly Merges Unauthenticated Strategy Payloads, Bypassing Local Security Settings

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

A vulnerability in rustdesk-client RustDesk Client rustdesk-client on Windows, MacOS, Linux, iOS, Android, WebClient (Strategy sync, HTTP API client, config options engine modules) allows Application API Message Manipulation via Man-in-the-Middle. This vulnerability is associated with program files src/hbbs_http/sync.Rs, hbb_common/src/config.Rs and program routines Strategy merge loop in sync.Rs, Config::set_options().

This issue affects RustDesk Client: through 1.4.5.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS Score: 9.1

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

CVSS 4.0

Product Status

Vendor	rustdesk-client
Product	RustDesk Client
Versions	Default: affected affected from 0 to 1.4.5 (incl.)

Affected Configurations

Client connected to any API server (Pro). MiTM or re-homing can also trigger.

Exploits

PoC available. Trivially exploitable.

Workarounds

None effective — allow-remote-config-modification toggle is ignored

Solutions

Enforce runtime toggle checks. Implement payload signing with server private key.

Credits

Erez Kalman finder
Erez Kalman reporter

References

https://rustdesk.com/docs/en/self-host/client-configuration/advanced-settings/

Problem Types

CWE-657 CWE

Impacts

CAPEC-384 Application API Message Manipulation via Man-in-the-Middle