CVE-2021-47709

Published Dec 9, 2025 Modified Apr 15, 2026 CWE-306

Description

COMMAX Smart Home System allows an unauthenticated attacker to change configuration and cause denial-of-service through the setconf endpoint. Attackers can trigger a denial-of-service scenario by sending a malformed request to the setconf endpoint.

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Weakness Type (CWE)

CWE-306 Missing Authentication

References

Frequently Asked Questions

What is CVE-2021-47709? +
COMMAX Smart Home System allows an unauthenticated attacker to change configuration and cause denial-of-service through the setconf endpoint. Attackers can trigger a denial-of-service scenario by sending a malformed request to the setconf endpoint.
How do I check if I'm vulnerable to CVE-2021-47709? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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