Do Son CISA warned of an exploited Zyxel switch vulnerability in GS1900 devices. Patch the Zyxel switch vulnerability now to prevent network compromise.
CVE-2026-7273
Zyxel patched CVE-2026-7273, a stack-based buffer overflow in GS1900 switches. The Zyxel GS1900 vulnerability lets LAN attackers run OS commands.