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An issue was discovered on COROS PACE 3 devices through 3.0808.0. The BLE implementation of the COROS smartwatch does not support LE Secure Connections and instead enforces BLE Legacy Pairing. In BLE Legacy Pairing, the Short-Term Key (STK) can be easily guessed. This requires knowledge of the Temporary Key (TK), which, in the case of the COROS Pace 3, is set to 0 due to the Just Works pairing method. An attacker within Bluetooth range can therefore perform sniffing attacks, allowing eavesdropping on the communication.
Reserved 2025-04-11 | Published 2025-06-20 | Updated 2025-06-20 | Assigner mitresupport.coros.com/...087694119828-COROS-PACE-3-Release-Notes
www.syss.de/...te/Publikationen/Advisories/SYSS-2025-023.txt
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