CVE-2021-47708

COMMAX Smart Home IoT Control System SQL Injection Authentication Bypass

CVSS 9.3 CRITICALEPSS 0.4%CWE-89

Vexday Risk Score

28Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 9.3EPSS 0.4%KEV nãoPoC —Patch —

Lifecycle

09 Dec 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

COMMAX Co., Ltd. · Smart Home IoT Control System

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References

https://github.com/zeroscience https://www.commax.com https://www.exploit-db.com/exploits/50207 https://www.vulncheck.com/advisories/commax-smart-home-iot-control-system-sql-injection-authentication-bypass https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5662.php