Deviceways

Network switch

ZyXEL GS1900-8

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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
Hardware revision not specified
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

Device details — Source documentation (openwrt.org)

Hardware revision
A1

OpenWrt · A1

OpenWrt · A1 — Source documentation (openwrt.org)

Installation routes recorded
U-Boot TFTP + serial recovery
Recovery routes recorded
U-Boot TFTP recovery
Availability recorded by source
Available 2023

Device details

Device details — Source documentation (openwrt.org)

Hardware revision
B1

OpenWrt · B1

OpenWrt · B1 — Source documentation (openwrt.org)

Installation routes recorded
U-Boot TFTP + serial recovery
Recovery routes recorded
U-Boot TFTP recovery
Availability recorded by source
Available 2023

Hardware differences

Technical references

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)

GS1900-8 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(AAHH.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 — GS1900-8 firmware (zyxel.com) ↗
CVE published

CVSS 6.7 (v3.1)

GS1900-8 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(AAHH.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 — GS1900-8 firmware (zyxel.com) ↗
CVE published

CVSS 3.5 (v3.1)

GS1900-8 Firmware

A vulnerability was found in the CGI program in Zyxel GS1900-8 firmware version V2.60, that did not properly sterilize packet contents and could allow an authenticated, local user to…

CVE-2021-35030

Affected firmware
2.60
Fix
Fix details in the linked record
Read Zyxel CVE record
Details and sources
Public disclosure CVE updated

A vulnerability was found in the CGI program in Zyxel GS1900-8 firmware version V2.60, that did not properly sterilize packet contents and could allow an authenticated, local user to perform a cross-site scripting (XSS) attack via a crafted LLDP packet.

CVE published

ZyXEL GS1900-8

ZyXEL NWA1100-N, NWA1100-NH, NWA1121-NI, NWA1123-AC, and NWA1123-NI access points; P-660HN-51, P-663HN-51, VMG1312-B10A, VMG1312-B30A, VMG1312-B30B, VMG4380-B10A, VMG8324-B10A,…

CVE-2015-7256

Affected firmware
Version scope unspecified in source
Fix
Fix details in the linked record
Read certcc CVE record
Details and sources
Public disclosure CVE updated

ZyXEL NWA1100-N, NWA1100-NH, NWA1121-NI, NWA1123-AC, and NWA1123-NI access points; P-660HN-51, P-663HN-51, VMG1312-B10A, VMG1312-B30A, VMG1312-B30B, VMG4380-B10A, VMG8324-B10A, VMG8924-B10A, VMG8924-B30A, and VSG1435-B101 DSL CPEs; PMG5318-B20A GPONs; SBG3300-N000, SBG3300-NB00, and SBG3500-N000 small business gateways; GS1900-8 and GS1900-24 switches; and C1000Z, Q1000, FR1000Z, and P8702N project models use non-unique X.509 certificates and SSH host keys.

Check more security advisories for this device · CVE.org