Serial number: AV26-603
Date: June 16, 2026
Updated: September 21, 2026
On June 16, 2026, Zyxel published a security advisory to address vulnerabilities in the following products:
- GS1900 series switches – multiple versions and models
Update 1
On September 21, 2026, Cybersecurity and Infrastructure Security Agency (CISA) added CVE-2026-7273 to their Known Exploited Vulnerabilities (KEV) Database.
The Cyber Centre encourages users and administrators to review the provided web links and apply the necessary updates.