On December 23rd, 2020, Zyxel published an advisory for a hardcoded credential vulnerability. More than 100,000 Zyxel firewalls, access point controllers and VPN gateways are prone to this vulnerability. Vulnerability Details Zyxel firewalls and AP controllers contain hardcoded admin-level backdoor account, which can grant attackers root access to devices via either the SSH interface or … Continue reading “Backdoor Account in Zyxel Products (CVE-2020-29583)”