CVE-2021-47707— COMMAX CVD-Axx DVR Weak Default Credentials Stream Disclosure
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I. Basic Information for CVE-2021-47707
Vulnerability Information
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Vulnerability Title
COMMAX CVD-Axx DVR Weak Default Credentials Stream Disclosure
Source: NVD (National Vulnerability Database)
Vulnerability Description
COMMAX CVD-Axx DVR 5.1.4 contains weak default administrative credentials that allow remote password attacks and disclose RTSP stream. Attackers can exploit this by sending a POST request with the 'passkey' parameter set to '1234', allowing them to access the web control panel.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
CWE-1392
Source: NVD (National Vulnerability Database)
Vulnerability Title
COMMAX CVD-Axx DVR 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
COMMAX CVD-Axx DVR是韩国COMMAX公司的一系列数字视频录像机。 COMMAX CVD-Axx DVR 5.1.4版本存在安全漏洞，该漏洞源于默认凭据弱问题，可能导致远程密码攻击和RTSP流泄露。
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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| COMMAX Co., Ltd. | COMMAX CVD-Axx DVR | CVD-AH04 DVR 4.4.1 | - |
II. Public POCs for CVE-2021-47707
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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- https://www.commax.comproduct
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5667.phpthird-party-advisory
- https://nvd.nist.gov/vuln/detail/CVE-2021-47707
Same Patch Batch · COMMAX Co., Ltd. · 2025-12-09 · 7 CVEs total
| CVE-2021-47709 | COMMAX Smart Home Ruvie CCTV Bridge DVR Service Config Write / DoS | |
| CVE-2021-47708 | COMMAX Smart Home IoT Control System SQL Injection Authentication Bypass | |
| CVE-2021-47710 | COMMAX Smart Home Ruvie CCTV Bridge DVR Service RTSP Credentials Disclosure | |
| CVE-2021-47705 | CNC_Ctrl DllUnregisterServer Access Violation | |
| CVE-2021-47706 | COMMAX Biometric Access Control System Authentication Bypass | |
| CVE-2021-47719 | CNC_Ctrl DllUnregisterServer f5501 Access Violation |
IV. Related Vulnerabilities
Same vendor: COMMAX Co., Ltd.
- CVE-2021-47743
COMMAX Biometric Access Control System 1.0.0 Reflected XSS v - CVE-2021-47719
CNC_Ctrl DllUnregisterServer f5501 Access Violation - CVE-2021-47710
COMMAX Smart Home Ruvie CCTV Bridge DVR Service RTSP Credent - CVE-2021-47709
COMMAX Smart Home Ruvie CCTV Bridge DVR Service Config Write - CVE-2021-47708
COMMAX Smart Home IoT Control System SQL Injection Authentic
Same weakness: CWE-1392
V. Comments for CVE-2021-47707
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