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I. Basic Information for CVE-2025-31703
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability found in Dahua NVR/XVR device. A third-party malicious attacker with physical access to the device may gain access to a restricted shell via the serial port, and bypasses the shell's authentication mechanism to escalate privileges.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
使用基本弱点进行的认证绕过
Source: NVD (National Vulnerability Database)
Vulnerability Title
Dahua NVR和Dahua XVR 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Dahua NVR和Dahua XVR都是中国大华（Dahua）公司的产品。Dahua NVR是一系列网络视频录像机。Dahua XVR是一系列能够录制和显示高清和 Ip 摄像机的设备。 Dahua NVR和Dahua XVR存在安全漏洞，该漏洞源于物理访问串行端口可绕过身份验证机制，可能导致权限提升。以下版本受到影响：Dahua NVR2-4KS3、Dahua XVR4232AN-I/T和Dahua XVR1B16H-I/T。
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
dahuaNVR2-4KS3 Versions which Build time prior to 3rd March 2026 -
dahuaXVR4232AN-I/T Versions which Build time prior to 3rd March 2026 -
dahuaXVR1B16H-I/T Versions which Build time prior to 3rd March 2026 -
II. Public POCs for CVE-2025-31703
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III. Intelligence Information for CVE-2025-31703
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IV. Related Vulnerabilities
Same vendor: dahua
Same weakness: CWE-305
V. Comments for CVE-2025-31703

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