Chinese-Made Zbtlink Routers Ship With Backdoor That Opens Unauthenticated Root Shells

Aug 06, 2026 - 11:15
Chinese-Made Zbtlink Routers Ship With Backdoor That Opens Unauthenticated Root Shells
Cybersecurity researchers have disclosed details of a "factory-shipped backdoor" implanted in at least 20 Chinese router models from Zbtlink. According to a new report from VulnCheck, the implant appears in all 21 firmware images currently available from Zbtlink that span more than 2 years. The backdoors are designed such that they start automatically and attempt to beacon to Chinese