CVE-2023-4473: OS Command Injection

Published Nov 30, 2023
·
Updated

A command injection vulnerability in the web server of the Zyxel NAS326 firmware version V5.21(AAZF.14)C0 and NAS542 firmware version V5.21(ABAG.11)C0 could allow an unauthenticated attacker to execute some operating system (OS) commands by sending a crafted URL to a vulnerable device.

Affected Software

4 affected components
All of the following
Zyxel NAS326<=5.21\(aazf.14\)c0
Zyxel NAS326
All of the following
Zyxel NAS542 firmware<=5.21\(abag.11\)c0
Zyxel NAS542 firmware

Remediation

Patch Available

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-authentication-bypass-and-command-injection-vulnerabilities-in-nas-products

Event History

Nov 30, 2023
CVE Published
01:40 AM
Data Sourced
01:40 AM
DescriptionSeverityWeakness
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Frequently Asked Questions

1

What is CVE-2023-4473?

CVE-2023-4473 is a command injection vulnerability in the web server of the Zyxel NAS326 firmware version V5.21(AAZF.14)C0 and NAS542 firmware version V5.21(ABAG.11)C0.

2

How can an attacker exploit CVE-2023-4473?

An unauthenticated attacker can exploit CVE-2023-4473 by sending a crafted URL to a vulnerable device, allowing them to execute operating system commands.

3

How severe is CVE-2023-4473?

CVE-2023-4473 has a severity rating of 9.8, which is classified as critical.

4

Which devices are affected by CVE-2023-4473?

The Zyxel NAS326 firmware version V5.21(AAZF.14)C0 and NAS542 firmware version V5.21(ABAG.11)C0 are affected by CVE-2023-4473.

5

How can I fix CVE-2023-4473?

To fix CVE-2023-4473, it is recommended to update the firmware of the Zyxel NAS326 and NAS542 devices to a version that is not vulnerable.

Company

Resources

Contact

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