CVE-2021-47708

CRITICAL

COMMAX Smart Home System CDP-1020n - SQL Injection

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-47708. PoCs published by LiquidWorm.

AI-analyzed exploit summary The exploit demonstrates an SQL injection vulnerability in COMMAX Smart Home IoT Control System CDP-1020n, allowing authentication bypass via the 'id' POST parameter in 'loginstart.asp'. The provided HTTP request includes a classic SQLi payload (' or 1=1--) to bypass authentication.

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.

Exploits (1)

exploitdb WORKING POC
by LiquidWorm · textwebappshardware
https://www.exploit-db.com/exploits/50207

The exploit demonstrates an SQL injection vulnerability in COMMAX Smart Home IoT Control System CDP-1020n, allowing authentication bypass via the 'id' POST parameter in 'loginstart.asp'. The provided HTTP request includes a classic SQLi payload (' or 1=1--) to bypass authentication.

Classification
Working Poc 95%
Attack Type
Sqli
Complexity
Trivial
Reliability
Reliable
Target: COMMAX Smart Home IoT Control System CDP-1020n
No auth needed
Prerequisites: Network access to the target system · The loginstart.asp endpoint must be accessible
devstral-2 · analyzed Feb 18, 2026 Full analysis →

References (5)

Core 5
Core References
Exploit, Third Party Advisory exploit
https://www.exploit-db.com/exploits/50207
Various Sources product
https://www.commax.com
Various Sources product
https://github.com/zeroscience
Third Party Advisory third-party-advisory
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5662.php

Scores

CVSS v4 9.3
EPSS 0.0042
EPSS Percentile 33.1%
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

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-89
Status published
Products (2)
COMMAX Co., Ltd./Smart Home IoT Control System 481 System
COMMAX Co., Ltd./Smart Home IoT Control System CDP-1020n
Published Dec 09, 2025
Tracked Since Feb 18, 2026