FiberGateway GR241AG - Full Exploit Chain

May 28, 2025

During the year of 2023 I’ve identified that it was possible to obtain full control of the FiberGateway GR241AG router (root access), provided by a Portuguese ISP (Meo), via the public wifi network “MEO WiFi”. This wifi network is enabled by default and can only be disabled by contacting the ISP support. More than 1.600.000 households were affected by the identified vulnerabilities.

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