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Undocumented backdoor found in Bluetooth chip used by a billion devices
(www.bleepingcomputer.com)
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this post was submitted on 08 Mar 2025
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I'm still looking into this but, "backdoor" appears to be incorrect and sensationalist. A team used proprietary software to uncover undocumented opcodes related to the Host Controller Interface (HCI). This could provide a path for arbitrary code execution, if one already has control of the Host... In which case they can arbitrarily execute whatever code they want.