Zyxel security advisory (AV26-1114)

Serial number: AV26-1114
Date: November 3, 2026

As of November 3, 2026, Zyxel is affected by vulnerabilities in the following products:

• Zyxel GS1900 series switches
  • Multiple versions and models
• Zyxel APs, FWA7, and Security Routers
  • Multiple versions and models

The Cyber Centre encourages users and administrators to review the provided web links and apply any necessary updates as they become available.

• Zyxel security advisory for out-of-bounds write vulnerability in GS1900 series switches
• Zyxel security advisory for buffer overflow vulnerability in certain APs, FWA7, and Security Routers
• Zyxel Advisories