CVE-2025-32879: coros pace 3 Auth Bypass — Exploit

Description

An issue was discovered on COROS PACE 3 devices through 3.0808.0. It starts advertising if no device is connected via Bluetooth. This allows an attacker to connect with the device via BLE if no other device is connected. While connected, none of the BLE services and characteristics of the device require any authentication or security level. Therefore, any characteristic, depending on their mode of operation (read/write/notify), can be used by the connected attacker. This allows, for example, configuring the device, sending notifications, resetting the device to factory settings, or installing software.

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CVSS v3.1 Score

8.8

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-287 Improper Authentication

CWE-306 Missing Authentication

Affected Products

Vendor	Product	Versions
yftech	coros_pace_3_firmware	< 3.0808.0
yftech	coros_pace_3	All

References

Exploits

https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2025-026.txt

Other References

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

Frequently Asked Questions

What is CVE-2025-32879? +

An issue was discovered on COROS PACE 3 devices through 3.0808.0. It starts advertising if no device is connected via Bluetooth. This allows an attacker to connect with the device via BLE if no other device is connected. While connected, none of the BLE services and characteristics of the device require any authentication or security level. Therefore, any characteristic, depending on their mode of operation (read/write/notify), can be used by the connected attacker. This allows, for example, configuring the device, sending notifications, resetting the device to factory settings, or installing software. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2025-32879? +

CVE-2025-32879 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-32879? +

CVE-2025-32879 affects products from yftech, specifically: coros_pace_3, coros_pace_3_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-32879? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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