CVE-2025-9495: Viessmann Vitogate 300 Authentication Bypass
Viessmann · Vitogate 300
Vendor fix available · Affected: Viessmann Vitogate 300 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 15% of scored CVEs
DescriptionCVE.org
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 products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- Viessmann · Vitogate 300from 1 before 3.0.0.0
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Viessmann
- Published
- September 2025
CoverageNo articles yet
No CyberSIXT article names CVE-2025-9495 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.