Command Injection Vulnerability in Zyxel ARMOR Home Routers
CVE-2021-4029

8.8HIGH

Key Information:

Vendor

Zyxel
Status
Armor Z2 (nbg6817) Firmware
Armor Z1 (nbg6816) Firmware
Vendor
CVE Published:
24 February 2022

What is CVE-2021-4029?

A command injection vulnerability exists in the CGI program of Zyxel ARMOR Z1/Z2 firmware, enabling an attacker to execute arbitrary operating system commands remotely through the Local Area Network (LAN) interface. This security flaw poses significant risks, as it can lead to unauthorized access and control over the affected devices, potentially compromising the safety and integrity of the network.

Affected Version(s)

ARMOR Z1 (NBG6816) firmware 1.00(AAWB.10)C0

ARMOR Z2 (NBG6817) firmware 1.00(ABCS.10)C0

References

https://www.zyxel.com/support/forgery-vulnerabilities-of-...
x_refsource_CONFIRM

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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CVE-2021-4029 : Command Injection Vulnerability in Zyxel ARMOR Home Routers