Manufacturer page
Zyxel is a useful official-source vendor for this site because its advisories typically list affected versions, patch availability, and direct model download paths across firewalls, routers, and APs.
Zyxel published an official firmware advisory that includes the SCR 50AXE security router, with the router patch table moving affected firmware 1.20(ACGN.0)C0 and earlier to fixed version 1.30(ACGN.0)C0.
Zyxel published an official security advisory covering Slowloris-style resource consumption and post-authentication command injection issues across several product families, with the SCR 50AXE security router moving from 1.10(ACGN.3)C0 and earlier to fixed firmware 1.20(ACGN.0)C0 via cloud update.
Zyxel published a USG FLEX H firewall advisory covering incorrect permission assignment and improper privilege management issues that could let a local attacker escalate privileges; the vendor says patched uOS builds are available.
Zyxel released patches for a privilege management issue affecting multiple AP models and the USG LITE 60AX security router, with fixed firmware trains and model-specific download paths published in the official advisory.