Reflected Cross-Site Scripting Vulnerability in COMMAX Biometric Access Control System
CVE-2021-47743

5.1MEDIUM

Key Information:

Vendor

Commax Co., Ltd.

Status
Commax Biometric Access Control System
Vendor
CVE Published:
31 December 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47743?

The COMMAX Biometric Access Control System 1.0.0 is susceptible to an unauthenticated reflected cross-site scripting vulnerability. Exploitation occurs through manipulation of the 'CMX_ADMIN_NM' and 'CMX_COMPLEX_NM' cookie parameters, allowing malicious actors to inject and execute arbitrary HTML and JavaScript code in the browser session of the victim. This vulnerability poses significant risks for users by potentially enabling session hijacking and other malicious activities.

Affected Version(s)

COMMAX Biometric Access Control System 1.0.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2021-47743 - Proof of Concept

References

https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-56...
third-party-advisory
https://packetstormsecurity.com/files/163834
exploit
https://exchange.xforce.ibmcloud.com/vulnerabilities/207578
vdb-entry

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

LiquidWorm as Gjoko Krstic of Zero Science Lab
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CVE-2021-47743 : Reflected Cross-Site Scripting Vulnerability in COMMAX Biometric Access Control System