SQL Injection Flaw in COMMAX Smart Home System
CVE-2021-47708

9.3CRITICAL

Key Information:

Vendor

Commax Co., Ltd.

Status
Smart Home Iot Control System
Vendor
CVE Published:
9 December 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47708?

The COMMAX Smart Home System CDP-1020n is susceptible to SQL injection, allowing attackers to bypass authentication mechanisms via the 'id' parameter in the 'loginstart.asp' endpoint. By injecting arbitrary SQL code through malicious POST requests, an attacker can manipulate database queries, leading to unauthorized access to the system. This vulnerability raises significant security concerns for users relying on the Smart Home System, making it critical to implement necessary security patches and techniques to safeguard sensitive information.

Affected Version(s)

Smart Home IoT Control System CDP-1020n

Smart Home IoT Control System 481 System

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-2021-47708 - Proof of Concept

References

https://www.exploit-db.com/exploits/50207
exploit
https://www.commax.com
product
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-56...
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
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-2021-47708 : SQL Injection Flaw in COMMAX Smart Home System