CVE-2025-32876

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.

CVSS v3.1 CNA

6.8 MEDIUMCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS

0.40% chance of exploitation in the next 30 days, 33rd percentile

Published

2025-06-20

Updated

2025-06-24

Proof-of-concept exploits (1)

• https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-023.txt

Security advisories

• https://syss.de
• https://support.coros.com/hc/en-us/articles/20087694119828-COROS-PACE-3-Release-Notes

References

• CVE Record
• NVD entry