CVE-2025-9495Viessmann Vitogate 300 Authentication Bypass
Updated under an hour ago ()
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It affects Viessmann Vitogate 300. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 8.7 HIGH (v4.0, CNA)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
- Weakness (CWE)
- CWE-602
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Carrier
- NVD analysis
- Deferred
- Record last updated
- Sep 23, 2025
- First seen by InfoSec Signals
- Oct 11, 2026
Affected products
Viessmann Vitogate 300 viessmann:vitogate_300 (from the name) | from 1 before 3.0.0.0 | CNA record |
References
- https://https://www.corporate.carrier.com/product-security/advisories-resources/
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.