CVE-2021-47709

8.7 highEPSS 0.4%

High (8.7). EPSS 0.4% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

8.7 high

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

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 28% of CVEs (scores of 2026-10-31)
CWE: CWE-306
Published: 2025-12-09
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

https://www.commax.com
https://www.exploit-db.com/exploits/50209
https://www.vulncheck.com/advisories/commax-smart-home-ruvie-cctv-bridge-dvr-service-config-write-dos
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5666.php

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