A technical advisory has been disclosed regarding a zero-click takeover vulnerability in Samsung Galaxy Buds, involving L2CAP session preemption. The research details how an attacker within Bluetooth range can exploit the device's connection arbitration behavior between HFP and A2DP profiles. This allows an unauthorized device to preempt an active audio session and become the primary audio endpoint without any user interaction or approval.
According to the disclosure, this behavior bypasses traditional pairing trust boundaries and does not require the compromise of the target's smartphone. Although the issue was reported to Samsung, the manufacturer has reportedly classified the observed behavior as 'working as intended.' The advisory serves as a reference to existing public research, including technical proof-of-concept details and testing methodologies for security analysts and researchers.
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