CVE-2021-47708 PUBLISHED

COMMAX Smart Home IoT Control System SQL Injection Authentication Bypass

Assigner: VulnCheck
Reserved: 05.12.2025 Published: 09.12.2025 Updated: 10.12.2025

COMMAX Smart Home System CDP-1020n contains an SQL injection vulnerability that allows attackers to bypass authentication by injecting arbitrary SQL code through the 'id' parameter in 'loginstart.asp'. Attackers can exploit this by sending a POST request with malicious 'id' values to manipulate database queries and gain unauthorized access.

Metrics

CVSS 4.0

CVSS 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
CVSS Score: 9.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	COMMAX Co., Ltd.
Product	Smart Home IoT Control System
Versions	Default: unaffected Version CDP-1020n is affected Version 481 System is affected

Credits

LiquidWorm as Gjoko Krstic of Zero Science Lab finder

References

Problem Types

CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') CWE