Improper Certificate Validation in RustDesk Client by RustDesk
CVE-2026-30794

9.1CRITICAL

Key Information:

Vendor

Rustdesk-client

Status
Rustdesk Client
Vendor
CVE Published:
5 March 2026

Badges

👾 Exploit Exists

What is CVE-2026-30794?

The RustDesk Client exhibits an improper certificate validation vulnerability, stemming from its handling of TLS transport modules across various platforms including Windows, MacOS, Linux, iOS, and Android. When adversaries intercept communications, they can exploit this flaw, allowing unauthorized access or manipulation of data. The issue arises from certain program files and routines that permit dangerous configurations, notably allowing invalid certificates to be accepted during TLS connections. As such, users of RustDesk Client versions up to 1.4.5 need to address this vulnerability to enhance their security posture.

Affected Version(s)

RustDesk Client Windows 0 <= 1.4.5

References

https://github.com/rustdesk/rustdesk
product
https://docs.google.com/document/d/e/2PACX-1vSds6jjpd38oO...
third-party-advisoryexploit
https://www.vulsec.org/
vdb-entrythird-party-advisory

CVSS V4

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Erez Kalman
Erez Kalman
.