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Undocumented "backdoor" found in Bluetooth chip used by a billion devices [ESP32] (www.bleepingcomputer.com)

submitted 3 months ago by [email protected] to c/[email protected]

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cross-posted from: https://sopuli.xyz/post/23587111

Archive: https://archive.is/2025.03.08-191658/https://www.bleepingcomputer.com/news/security/undocumented-backdoor-found-in-bluetooth-chip-used-by-a-billion-devices/

The ubiquitous ESP32 microchip made by Chinese manufacturer Espressif and used by over 1 billion units as of 2023 contains an undocumented "backdoor" that could be leveraged for attacks.

The undocumented commands allow spoofing of trusted devices, unauthorized data access, pivoting to other devices on the network, and potentially establishing long-term persistence.

This was discovered by Spanish researchers Miguel Tarascó Acuña and Antonio Vázquez Blanco of Tarlogic Security, who presented their findings yesterday at RootedCON in Madrid.

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