CVE-2025-9495 — Viessmann Vitogate 300 Authentication Bypass
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 …
Published: 2025-09-23 · CVSS: 8.7 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7