CVE-2021-47708

critical

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.

References

https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5662.php

https://www.vulncheck.com/advisories/commax-smart-home-iot-control-system-sql-injection-authentication-bypass

https://www.exploit-db.com/exploits/50207

https://www.commax.com

https://github.com/zeroscience

Details

Source: Mitre, NVD

Published: 2025-12-09

Updated: 2025-12-12

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

CVSS v4

Base Score: 9.3

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

Severity: Critical

EPSS

EPSS: 0.00167