Check Point Advisories

Zyxel NAS326 Command Injection (CVE-2019-10631; CVE-2019-10633; CVE-2023-27992; CVE-2023-37927; CVE-2023-37928; CVE-2023-4473; CVE-2023-4474)

Vulnerability
Protection

Check Point Reference:	CPAI-2023-1538
Date Published:	21 Feb 2024
Severity:	Critical
Last Updated:	Sunday 23 February, 2025
Source:
Industry Reference:	CVE-2019-10631 CVE-2019-10633 CVE-2023-27992 CVE-2023-37927 CVE-2023-37928 CVE-2023-4473 CVE-2023-4474
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Zyxel NAS326 firmware version V5.21(AAZF.14)C0 and prior Zyxel NAS542 firmware version V5.21(ABAG.11)C0 and prior
Vulnerability Description	A command injection vulnerability exists in Zyxel NAS326. Successful exploitation of this vulnerability could allow a remote attacker to execute arbitrary commands on the affected system.

Protection Overview

This protection detects attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R81 / R80 / R77 / R75

In the IPS tab, click Protections and find the Zyxel NAS326 Command Injection protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Application Servers Protection Violation.
Attack Information: Zyxel NAS326 Command Injection