Zyxel security advisory (AV25-767)

Serial number: AV25-767
Date: November 18, 2025

On November 18, 2025, Zyxel published a security advisory to address vulnerabilities in the following products:

• 4G LTE/5G NR CPE – multiple versions and models
• DSL/Ethernet CPE – multiple versions and models
• Fiber ONTs – multiple versions and models
• Security Routers – version 1.10(ACGN.3)C0 and prior
• Wireless Extenders – multiple versions and models

The Cyber Centre encourages users and administrators to review the provided web links and apply the necessary updates.

• Zyxel security advisory for uncontrolled resource consumption and command injection vulnerabilities in certain 4G LTE/5G NR CPE, DSL/Ethernet CPE, Fiber ONTs, Security Routers, and Wireless Extenders
• Zyxel Advisories