Authentication Bypass in COMMAX Biometric Access Control System
CVE-2021-47706

8.7HIGH

Key Information:

Vendor

Commax Co., Ltd.

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

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2021-47706?

The COMMAX Biometric Access Control System version 1.0.0 is affected by an authentication bypass vulnerability. This issue allows unauthenticated attackers to exploit cookie poisoning techniques to circumvent authentication mechanisms, granting them unauthorized access to sensitive information. As a result, attackers may bypass critical physical security controls for smart homes and buildings, potentially leading to serious privacy breaches and security threats.

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-2021-47706 - Proof of Concept

References

https://www.exploit-db.com/exploits/50206
exploit
https://www.commax.com
product
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-56...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

LiquidWorm as Gjoko Krstic of Zero Science Lab
JSON
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CVE-2021-47706 : Authentication Bypass in COMMAX Biometric Access Control System