CVE-2026-30797 PUBLISHED

RustDesk rustdesk://config/ URI Silently Re-homes Client to Attacker-Controlled Server

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

Missing Authorization vulnerability in rustdesk-client RustDesk Client rustdesk-client on Windows, MacOS, Linux, iOS, Android (Flutter URI scheme handler, config import modules) allows Application API Message Manipulation via Man-in-the-Middle. This vulnerability is associated with program files flutter/lib/common.Dart and program routines importConfig() via URI handler.

This issue affects RustDesk Client: through 1.4.5.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
CVSS Score: 9.3

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

CVSS 4.0

Product Status

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

Affected Configurations

Default — RustDesk installed with URI scheme handler registered

Exploits

PoC available. Trivially exploitable.

Workarounds

Unregister the rustdesk:// URI scheme handler at OS level

Solutions

Require admin elevation and user confirmation. Add config to disable. Sign config payloads.

Credits

Erez Kalman finder
Erez Kalman reporter

References

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

Problem Types

CWE-862 Missing Authorization CWE
CWE-749 CWE

Impacts

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