CVE-2026-30794
Improper Certificate Validation in RustDesk Client Enables MiTM Attack
Publication date: 2026-03-05
Last updated on: 2026-03-25
Assigner: VULSec Labs
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| rustdesk | rustdesk | to 1.4.5 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-295 | The product does not validate, or incorrectly validates, a certificate. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is an Improper Certificate Validation issue in the RustDesk Client (rustdesk-client) across multiple platforms including Windows, MacOS, Linux, iOS, and Android. It affects the HTTP API client and TLS transport modules. Due to improper validation of TLS certificates, an adversary can perform a Man-in-the-Middle (MitM) attack, intercepting or altering communications between the client and server.
The problem is linked to specific program files and routines where the client retries TLS connections with a setting that dangerously accepts invalid certificates (danger_accept_invalid_certs(true)). This allows attackers to bypass normal certificate checks.
How can this vulnerability impact me? :
This vulnerability can have severe impacts because it allows an attacker to intercept and potentially manipulate the data transmitted between the RustDesk client and its server. Since the TLS certificate validation is improperly handled, attackers can impersonate the server or intercept sensitive information.
- Compromise of confidentiality: sensitive data such as credentials or session information could be exposed.
- Integrity risks: data could be altered in transit without detection.
- Potential unauthorized access or control over remote desktop sessions.
Overall, this vulnerability poses a high risk to users relying on RustDesk for secure remote desktop connections.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
I don't know