This router gets the basics right, but the gaps are significant. Critical remote code execution vulnerabilities have been found in Arris cable gateway hardware. If any device on your Wi-Fi gets infected — a kid’s tablet, a smart bulb, a guest’s phone — it can reach your work laptop and banking app on the same flat network.
A C grade is not a sign-off. It means there are real, exploitable issues affecting this network every day.
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A flaw in the modem firmware lets attackers on Your ISP's network intercept every connection your home makes
A flaw in the modem firmware lets an attacker on your ISP's network intercept or redirect every connection your home makes — banking sessions, video calls, smart home commands — before your router ever sees them.
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Arris platform vulnerability history: Critical remote code execution vulnerabilities have been found in Arris cable gateway hardware. Patch deployment speed has been inconsistent.
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A real gap that affects every device sharing this Wi-Fi
It affects every device sharing this Wi-Fi — your work laptop, your phone, your kids' devices, your security cameras. Not the most urgent threat on the page, but a real edge an attacker can use to reach the rest.
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Modem/router combo - shared attack surface: Combining modem and router functions means a vulnerability in the modem stack can affect the routing functions, and vice versa.
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A small gap that still touches every device on this network
A small gap, not an urgent one — but it still touches everything on this network: your work laptop, your phone, your security cameras, and any guest device that joins the Wi-Fi.
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Limited advanced security features: No built-in VPN, device isolation, or advanced firewall rules. Basic NAT firewall only.
If a new vulnerability is found for your Motorola MG8702, we'll email you. One email per incident. No spam.