The hidden backdoor could allow attackers to gain unauthorized access to affected routers and other connected devices, cybersecurity company VulnCheck said.

Over 20 Chinese-made Zbtlink router models contain a backdoor that could enable remote access to routers and connected devices, researchers said. | World News

At least 20 Zbtlink router models ship with ENDLESSDOORS, a root backdoor that attempts C2 contact as often as every 35 seconds and accepts commands.