Critical severityNVD Advisory· Published Dec 9, 2025· Updated Apr 15, 2026

CVE-2021-47708

Description

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.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Commax/Smart Home System CDP-1020nllm-create

Patches

Vulnerability mechanics

References

www.commax.comnvd
www.exploit-db.com/exploits/50207nvd
www.vulncheck.com/advisories/commax-smart-home-iot-control-system-sql-injection-authentication-bypassnvd
www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5662.phpnvd

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