Check Point Advisories

Zyxel Multiple Products Command Injection (CVE-2025-9133)

Vulnerability
Protection

Check Point Reference:	CPAI-2025-3236
Date Published:	26 Oct 2025
Severity:	High
Last Updated:	Sunday 26 October, 2025
Source:
Industry Reference:	CVE-2025-9133
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?	Zyxel ATP V4.32 and later, prior to V5.40 Zyxel USG FLEX V4.50 and later, prior to V5.40 Zyxel USG FLEX 50(W) V4.16 and later, prior to V5.40 Zyxel USG20(W)-VPN V4.16 and later, prior to V5.40
Vulnerability Description	A command injection vulnerability exists in Zyxel multiple products. 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 Multiple Products Command Injection (CVE-2025-9133) 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 Multiple Products Command Injection (CVE-2025-9133)