This router has documented security problems. Every device on this network — your work laptop, banking app, Ring camera, smart lock — is running at higher risk than it should be.
An F is not a warning — it’s a finding that the router has been independently flagged for security or supply-chain concerns serious enough to warrant action.
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When the next critical Wi-Fi flaw drops, this router will stay exposed for weeks while newer models are patched
Patches arrive late, if at all. When the next critical Wi-Fi flaw drops, this router will still be exposed weeks after newer models are protected — and every device on your network rides through it during that window.
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Aging hardware - 2015 vintage, minimal updates: The NVG599 is nearly a decade old. AT&T rarely issues firmware updates for this model. Long-term security posture is poor.
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A flaw in the modem firmware lets attackers on AT&T'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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Known vulnerabilities in device class: The NVG599 uses an Arris/Motorola platform that has had documented vulnerabilities across its product line.
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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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ISP remote management: AT&T maintains remote access to this gateway.
An A-rated alternative is shown below.
We'll email you if a new vulnerability hits your AT&T NVG599. One email per incident. No spam.
- AT&T Terms of Service ↗
- FCC Equipment Authorization Database ↗
- FCC Covered List · National Security Designation ↗