Deviceways

Network switch

ZyXEL GS1900-8HP

Contribute

Projects for this device

Replacement firmware

Replace router software with a customizable system for network controls and community packages.

How to get started

Follow the guide for your exact router version. The first installation may use its web interface, recovery mode or a serial connection.

Setup
Firmware replacement; route varies by router
You’ll need
Exact hardware revision, an appropriate OpenWrt release and its model-specific installation guide.
A1
Get OpenWrt firmware Release listed · 25.12.6Open device guide Release listed · 25.12.5
B1
Get OpenWrt firmware Release listed · 25.12.6Open device guide Release listed · 25.12.5
v1
Open hardware record
v2
Open hardware record
Original project github.com

A1

First installation
U-Boot TFTP + serial recovery

B1

First installation
U-Boot TFTP + serial recovery
Sources

Features & details

Check the project and hardware shown for each feature.

Device details

zyxel gs1900-8hp v1 — device documentation (github.com)

Hardware revision
v1

Device details

zyxel gs1900-8hp v2 — device documentation (github.com)

Hardware revision
v2

Device details

Device details — v1 — Source documentation (openwrt.org)

Hardware revision
A1

OpenWrt · A1

OpenWrt · A1 — v1 — Source documentation (openwrt.org)

Installation routes recorded
U-Boot TFTP + serial recovery
Recovery routes recorded
U-Boot TFTP + serial recovery
Availability recorded by source
Discontinued

Device details

Device details — v1 — Source documentation (openwrt.org)

Hardware revision
B1

OpenWrt · B1

OpenWrt · B1 — v1 — Source documentation (openwrt.org)

Installation routes recorded
U-Boot TFTP + serial recovery
Recovery routes recorded
U-Boot TFTP + serial recovery

Hardware differences

Security

Saved scan

From our saved security research.

Model advisories

Selected highlights

Prioritized by known exploitation, severity, then date.

CVE published

Listed in CISA KEV ↗CVSS 8.8 (v3.1)

GS1900-8HP firmware

A stack-based buffer overflow vulnerability in the CGI program of Zyxel GS1900-48HPv2 firmware versions through 2.90(ABTQ.1)C0 could allow a LAN-based, unauthenticated attacker to…

CVE-2026-7273

Affected firmware
<= 2.90(AAHI.1)C0
Fix
Fix details in the linked record
Read Zyxel CVE record
Details and sources
CVE updated

A stack-based buffer overflow vulnerability in the CGI program of Zyxel GS1900-48HPv2 firmware versions through 2.90(ABTQ.1)C0 could allow a LAN-based, unauthenticated attacker to exploit the flaw and potentially execute OS commands via a crafted HTTP request.

Security advisory zyxel security advisory for stack based buffer overflow vulnerability in gs1900 series switches 06 16 2026 — GS1900-8HP firmware (zyxel.com) ↗
CVE published

CVSS 6.7 (v3.1)

GS1900-8HP firmware

The privilege escalation vulnerability in the Zyxel GS1900-8 firmware version V2.70(AAHH.3) and the GS1900-8HP firmware version V2.70(AAHI.3) could allow an authenticated, local…

CVE-2022-45853

Affected firmware
V2.70(AAHI.3)
Fix
Fix details in the linked record
Read Zyxel CVE record
Details and sources
CVE updated

The privilege escalation vulnerability in the Zyxel GS1900-8 firmware version

V2.70(AAHH.3) and the GS1900-8HP firmware version V2.70(AAHI.3) could allow an authenticated, local attacker with administrator privileges to execute some system commands as 'root' on a vulnerable device via SSH.

Security advisory zyxel security advisory for privilege escalation vulnerability in gs1900 series switches — GS1900-8HP firmware (zyxel.com) ↗
Check more security advisories for this device · CVE.org