CVE-2025-9495 describes a critical authentication bypass vulnerability in the Vitogate 300 web interface, stemming from a reliance on client-side authentication. An attacker can manipulate HTML elements to expose and access the hidden administration menu, gaining full control over the device. This vulnerability carries a CVSS score of 8.7 (HIGH), indicating a severe impact with network-adjacent access, low attack complexity, and high confidentiality, integrity, and availability compromise. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| Viessmann | Vitogate 300 | >= 1, < 3.0.0.0CNA affecteddefault unaffected |
CVSS version used by this source: 4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.4 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.