What can an attacker do with CVE-2023-27988?

An authenticated attacker with administrator privileges can execute operating system commands on an affected device remotely.

How can I fix CVE-2023-27988?

Update the Zyxel NAS326 firmware to version V5.21(AAZF.13)C0 or later.

Is Zyxel Nas326 firmware version 5.21(AAZF.13)C0 affected by CVE-2023-27988?

No, Zyxel Nas326 firmware version 5.21(AAZF.13)C0 or later is not vulnerable to CVE-2023-27988.

Where can I find more information about CVE-2023-27988?

You can find more information about CVE-2023-27988 in the Zyxel security advisory for the post-authentication command injection vulnerability in NAS products. The advisory is available at: https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-command-injection-vulnerability-in-nas-products

Vulnerability/
CVE-2023-27988

high

7.2

CWE

78 77

30/5/2023

14/1/2025

CVE-2023-27988: OS Command Injection

Q: What is CVE-2023-27988?

CVE-2023-27988 is a post-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.13)C0.

First published: Tue May 30 2023(Updated: )

The post-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.13)C0 could allow an authenticated attacker with administrator privileges to execute some operating system (OS) commands on an affected device remotely.

Credit: security@zyxel.com.tw

Affected Software	Affected Version	How to fix
Zyxel NAS326 firmware	<5.21\(aazf.13\)c0
Zyxel NAS326
Zyxel Nas540 Firmware	<5.21\(aatb.10\)c0
Zyxel Nas540
Zyxel Nas542 Firmware	<5.21\(abag.10\)c0
Zyxel NAS542

Remedy

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

Never miss a vulnerability like this again

Reference Links

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

Frequently Asked Questions

What is CVE-2023-27988?
CVE-2023-27988 is a post-authentication command injection vulnerability in the Zyxel NAS326 firmware versions prior to V5.21(AAZF.13)C0.
What can an attacker do with CVE-2023-27988?
An authenticated attacker with administrator privileges can execute operating system commands on an affected device remotely.
How can I fix CVE-2023-27988?
Update the Zyxel NAS326 firmware to version V5.21(AAZF.13)C0 or later.
Is Zyxel Nas326 firmware version 5.21(AAZF.13)C0 affected by CVE-2023-27988?
No, Zyxel Nas326 firmware version 5.21(AAZF.13)C0 or later is not vulnerable to CVE-2023-27988.
Where can I find more information about CVE-2023-27988?
You can find more information about CVE-2023-27988 in the Zyxel security advisory for the post-authentication command injection vulnerability in NAS products. The advisory is available at: https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-post-authentication-command-injection-vulnerability-in-nas-products

collector/nvd-latest
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agent/weakness
agent/references
agent/severity
agent/author
agent/type
agent/description
agent/event
agent/last-modified-date
agent/remedy
agent/softwarecombine
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agent/tags
collector/mitre-cve
source/MITRE
vendor/zyxel
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canonical/zyxel nas326
canonical/zyxel nas540 firmware
canonical/zyxel nas540
canonical/zyxel nas542 firmware
canonical/zyxel nas542

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