COMMAX CVD-Axx DVR Weak Default Credentials Stream Disclosure

Advisories

severity: high
date: December 9, 2025
Affecting: CVD-AH04 DVR 4.4.1
CVD-AF04 DVR 4.4.1
CVD-AH16 DVR 5.1.4
CVD-AF16 DVR 4.4.1
CVD-AF08 DVR 5.1.2
CVD-AH08 DVR 5.1.2
CVE: CVE-2021-47707
CWE: CWE-1392 Use of Default Credentials
CVSS: 8.5
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References: ExploitDB-50210
COMMAX Vendor Homepage
Zero Science Lab Disclosure (ZSL-2021-5667)
Credit: LiquidWorm as Gjoko Krstic of Zero Science Lab
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.