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Vulnerability record · CVE-2021-47710 · published 9 December 2025

CVE-2021-47710: Missing authentication for critical function vulnerability

COMMAX Smart Home System is a smart IoT home solution that allows an unauthenticated attacker to disclose RTSP credentials in plain-text by exploiting the /overview.asp endpoint. Attackers can access sensitive information, including login credentials and DVR settings, by submitting a GET request to this endpoint.

8.7 CVSS 4.0 High EPSS 0.35% · top 73.9% CWE-306 · Missing authentication for critical function Deferred
8.7CVSS 4.0 base score
0.35%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

COMMAX Smart Home System is a smart IoT home solution that allows an unauthenticated attacker to disclose RTSP credentials in plain-text by exploiting the /overview.asp endpoint. Attackers can access sensitive information, including login credentials and DVR settings, by submitting a GET request to this endpoint.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://www.commax.com
https://www.exploit-db.com/exploits/50208
https://www.vulncheck.com/advisories/commax-smart-home-ruvie-cctv-bridge-dvr-service-rtsp-credentials-disclosure
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5665.php

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Source: NIST National Vulnerability Database (record CVE-2021-47710), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.