CVE-2021-47707

CRITICAL

COMMAX CVD-Axx DVR 5.1.4 - Info Disclosure

Title source: llm

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.

Exploits (1)

exploitdb WORKING POC

by LiquidWorm · textwebappshardware

https://www.exploit-db.com/exploits/50210

View Code ZIP pw:eip

References (4)

[Exploit, Third Party Advisory] https://www.exploit-db.com/exploits/50210

[Various Sources] https://www.commax.com

[Third Party Advisory] https://www.vulncheck.com/advisories/commax-cvd-axx-dvr-weak-default-credentials-stream-disclosure

[Third Party Advisory] https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5667.php

Scores

CVSS v4 9.3

EPSS 0.0008

EPSS Percentile 23.3%

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

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact partial

Details

CWE

CWE-1392

Status published

Products (1)

COMMAX Co., Ltd./COMMAX CVD-Axx DVR CVD-AH04 DVR 4.4.1

Published Dec 09, 2025

Tracked Since Feb 18, 2026