Zyxel hard coded password vulnerability

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PHolder

Well-known member
Sep 16, 2020
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Ontario, Canada
Hackers are attempting to exploit a recently discovered backdoor built into multiple Zyxel device models that hundreds of thousands of individuals and businesses use as VPNs, firewalls, and wireless access points.

The backdoor comes in the form of an undocumented user account with full administrative rights that’s hardcoded into the device firmware, a researcher from Netherlands-based security firm Eye Control recently reported. The account, which uses the username zyfwp, can be accessed over either SSH or through a Web interface.
 
Just threw away an old ISP DSL router that's been sitting around (unused) for years, literally two days ago. Reminds me, many years ago I had ran an NMap scan on it and it discovered a port that regardless of firewall or port-forward rules, could not be stealthed. Finally I just put the thing in bridge mode and stuck a personal router behind it... though I'm not even 100% sure that helped. That port IIRC was a remote administration port.