Switch GS1200v3 Series - V1.00 Patch 4 Firmware Release

Zyxel_Melen

Zyxel Switch GS1200v3 Series Release Note 

July 2026

Firmware Version on all models

(Click Hyperlink to download the firmware directly)

Zyxel GS1200-5v3 - V1.00(ACPS.4)C0

Zyxel GS1200-8v3 - V1.00(ACPT.4)C0

Zyxel GS1200-10v3 - V1.00(ACPW.4)C0

Zyxel GS1200-5HPv3 - V1.00(ACPU.4)C0

Zyxel GS1200-8HPv3 - V1.00(ACPV.4)C0

New Feature and Enhancements

Bug Fix

1. [CVE-2026-4795] Resolved unauthorized configuration file download without user authentication. 

2. [CVE-2026-4795] Resolved the issue that allowed login using hashed credentials stored in the configuration. 

3. The switch now automatically sends a new DHCP Discovery after the management VLAN ID is changed. 

4. Resolved a login failure with passwords containing special characters. 

5. Disable the console interface to enhance security.

Please refer to the Download Link for more details.