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I. Basic Information for CVE-2025-9495
Vulnerability Information

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Vulnerability Title
Viessmann Vitogate 300 Authentication Bypass
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
服务端安全的客户端实施
Source: NVD (National Vulnerability Database)
Vulnerability Title
Viessmann Vitogate 300 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Viessmann Vitogate 300是德国Viessmann公司的一款通信网关。 Viessmann Vitogate 300存在安全漏洞,该漏洞源于未实施正确的服务器端身份验证且依赖前端身份验证控制,可能导致攻击者通过修改浏览器开发者工具中的HTML元素绕过登录限制并获取设备完全控制权。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
VendorProductAffected VersionsCPESubscribe
ViessmannVitogate 300 1 ~ 3.0.0.0 -
II. Public POCs for CVE-2025-9495
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III. Intelligence Information for CVE-2025-9495
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IV. Related Vulnerabilities
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