Zyxel security advisory (AV25-767) - Canadian Centre for Cyber Security

Zyxel published a security advisory (AV25-767) on November 18, 2025, addressing vulnerabilities in various 4G LTE/5G NR CPE, DSL/Ethernet CPE, Fiber ONTs, Security Routers (version 1.10(ACGN.3)C0 and prior), and Wireless Extenders. The Canadian Centre for Cyber Security advises users and administrators to review the advisory and apply necessary updates.