Verizon Fios G3100
Security Analysis Report

Verizon Fios G3100

Last reviewed: March 2026 · ismyroutersafe.com

Verizon ISP Gateway Made in Taiwan (Arcadyan)
Permanent URL - bookmark it or forward it
B
GOOD
Clean supply chain - made by Arcadyan in Taiwan. But had a serious 9.8/10 authentication bypass in 2021, and Verizon's patch deployment was slow. Now patched but worth knowing.
  • Authentication bypass - slow patch: A path traversal vulnerability let attackers access the admin panel without authentication. Verizon patched it but deployment to customers was slow.
  • ISP remote access: Standard for ISP gateways: Verizon can remotely access this device.
  • Simplified firewall: The G3100's firewall is simplified for consumers. Granular rules are not available.
FCC & Ban Risk
88 /100 A
Supply chain · FCC status · CVEs · Patch support
Security Capabilities
31 /100 D
Zero-Trust · VPN · Segmentation · Monitoring
Est. 1.4M US homes use this router model How we estimated this ↗
🏭  Manufacturer
Verizon Communications (US)
Verizon Communications Inc., New York, NY · hardware by Arcadyan, Taiwan
Manufactured in: Taiwan (Arcadyan)
🏛️  FCC Status
FCC authorized
Not in scope
🛡️  Patch Support
Active
Whether security vulnerabilities are actively being patched
⚠️  Key Finding
high
Authentication bypass - slow patch
Live Network Check BETA

The report above reflects your router’s model record. This check runs live probes against your current network to detect issues static analysis cannot - DNS hijacking and admin interface exposure.

🔍
DNS HIJACK CHECK
Detects if your DNS has been silently rerouted to intercept your traffic
🌐
WAN EXPOSURE
Tests if your router admin panel is reachable from outside your home
No data stored · Runs entirely in your browser · ~5 seconds
🔒 Security capabilities comparison
We benchmark your router against Rio Router across 8 dimensions so you can see exactly what gaps exist - and what a fully-covered setup looks like.
VERIZON
your router
Rio Router
full standard
Zero-Trust Device Admission
Every new device is blocked by default - admin must approve it once, even if it has the right password
Locked
Available
Network Segmentation (VLANs)
Devices on your network are isolated from each other, so a hacked smart TV can't reach your laptop
Partial
Available
Router-Level VPN for All Devices
All traffic - including smart devices that can't run VPN apps - is encrypted before leaving your home
Locked
Available
Domain Allowlisting
Block everything except approved sites; more effective than trying to blacklist billions of harmful URLs
Locked
Available
Granular Password Control
Separate passwords per network zone - changing one doesn't affect others
Partial
Available
Guest Auto-Expiry
Guest devices are automatically removed when they leave; neighbors can't reconnect without re-approval
Locked
Available
Clean Supply Chain
Manufactured outside Chinese legal jurisdiction - not subject to China's National Intelligence Law
Available
Available
Active Threat Monitoring
DNS filtering, firewall, activity logs, and ongoing security patch support
Partial
Available
We use Rio Router as the benchmark because it’s the only consumer router built to score 8/8 on this framework - it shows you what a fully-covered setup looks like, not just what’s typical. See Rio →
📋 What you should do
1
Verify you're on the latest firmware - check at 192.168.1.1
2
Change admin password from default immediately
3
Review connected devices periodically in the My Verizon app
How this was scored · verified March 2026: This rating combines FCC authorization status, manufacturer legal jurisdiction, CVEs from NIST NVD, active patch support status, and CISA advisory mentions. See full methodology →
Reference Data
Other Verizon models
CR1000A B Active
CR500 D Managed by Verizon
FiOS G1100 F Limited - aging hardware
Sources & evidence
All findings trace to publicly verifiable primary sources - US government databases, official FCC filings, and NIST CVE records. No proprietary or anonymous sources are used.
  1. CVE-2021-20090 · CVSS 9.8 · 2021 ↗
  2. Verizon Terms of Service ↗
  3. FCC Equipment Authorization Database ↗
Full data source documentation: Scoring Methodology & Citations →
A free public tool made with 🦾 by Rio