Viessmann Vitogate 300 Authentication Bypass
Published Sep 23, 2025
8.7
HIGHCVSS 4.0
EPSS 0.24%
Description
The Vitogate 300 web interface fails to enforce proper server-side authentication and relies on frontend-based authentication controls. This allows an attacker to simply modify HTML elements in the browser’s developer tools to bypass login restrictions. By removing specific UI elements, an attacker can reveal the hidden administration menu, giving them full control over the device.
Affected products
-
- Version 1StatusaffectedConstraints<3.0.0.0
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Viessmann | Vitogate 300 | unaffected |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
These vulnerabilities have been fixed with Vitogate 300 software version 3.1.0.1.
Customers are strongly encouraged to upgrade by downloading software version 3.1.0.1 or newer at the Vitogate 300 website.
References (1)
Change history (0)
No recorded changes yet.