IoT Vulnerability in COMMAX Smart Home System Enables Credential Disclosure
CVE-2021-47710

8.7HIGH

Key Information:

Vendor

Commax Co., Ltd.

Status
Smart Home Ruvie Cctv Bridge Dvr Service
Vendor
CVE Published:
9 December 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47710?

The COMMAX Smart Home System, a smart IoT solution, is exposed to a vulnerability that allows unauthenticated attackers to leak RTSP credentials in plain-text. By exploiting the /overview.asp endpoint, attackers can submit a GET request to retrieve sensitive information, including critical login credentials and DVR configurations. This exposure presents significant risks, as potentially malicious actors can gain unauthorized access to the smart home environment.

Affected Version(s)

Smart Home Ruvie CCTV Bridge DVR Service *

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-47710 - Proof of Concept

References

https://www.exploit-db.com/exploits/50208
exploit
https://www.commax.com
product
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-56...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

LiquidWorm as Gjoko Krstic of Zero Science Lab
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CVE-2021-47710 : IoT Vulnerability in COMMAX Smart Home System Enables Credential Disclosure