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.
Advisories
Source ID Title
EUVD EUVD EUVD-2025-18749 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.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 08 Jul 2025 15:00:00 +0000

Type Values Removed Values Added
First Time appeared Yftech
Yftech coros Pace 3
Yftech coros Pace 3 Firmware
CPEs cpe:2.3:h:yftech:coros_pace_3:-:*:*:*:*:*:*:*
cpe:2.3:o:yftech:coros_pace_3_firmware:*:*:*:*:*:*:*:*
Vendors & Products Yftech
Yftech coros Pace 3
Yftech coros Pace 3 Firmware

Tue, 24 Jun 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 24 Jun 2025 15:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-306
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 20 Jun 2025 13:45:00 +0000

Type Values Removed Values Added
Description 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.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-06-24T15:27:06.224Z

Reserved: 2025-04-11T00:00:00.000Z

Link: CVE-2025-32876

cve-icon Vulnrichment

Updated: 2025-06-24T13:49:54.056Z

cve-icon NVD

Status : Analyzed

Published: 2025-06-20T14:15:27.877

Modified: 2025-07-08T14:32:59.510

Link: CVE-2025-32876

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.