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Undocumented "backdoor" found in Bluetooth chip used by a billion devices
(www.bleepingcomputer.com)
this post was submitted on 08 Mar 2025
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Technology
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Someone correct me if i'm wrong, but it looks like it's not the big deal the original blog post makes it out to be.
To issue those undocumented HCI commands one either needs to hijack a computer/soc/mcu that is connected to an esp32 with HCI UART transport enabled or put malicious software on the esp itself.
The mac spoofing might be interesting for people building hacking tools, however.
Yeah, this is hyped for clicks. This requires the target device to already be paired and requires privileged access on the local system to install the custom driver. NVD rates the exploitability of CVE-2025-27840 as 0.3 out of 10.