# CVE-2025-9495

## Summary

- **CVE ID:** CVE-2025-9495
- **Severity:** HIGH
- **CVSS Score:** 8.7 (CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-602
- **Published:** Sep 23, 2025
- **Last Modified:** Mar 12, 2026

## 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

- Viessmann — Vitogate 300 (1)

## References

- [CNA](https://https://www.corporate.carrier.com/product-security/advisories-resources/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.24%
- **EPSS Percentile:** 15.1

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._