CVE-2021-47709 HIGH

CVE-2021-47709: COMMAX Smart Home Ruvie CCTV Bridge DVR Service Config Write / DoS

Vendor Commax Co., Ltd.
Product Smart Home Ruvie CCTV Bridge DVR Service
Weakness CWE-306 · Missing auth
Published December 9, 2025
Last update April 7, 2026
View on NVD All CVEs

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

December 9, 2025 CVE published
April 7, 2026 Record updated