CVE-2026-109570: Fire-Boltt BSW013

Medium severity, CVSS 4.3. EPSS: 0.2% chance of exploitation in the next 30 days.

Fire-Boltt BSW013 smartwatch firmware through V0.0.8 contains a missing authentication vulnerability that allows unpaired attackers to inject notifications by writing to the proprietary BLE command characteristic. Attackers within Bluetooth range can craft commands protected only by a CRC-16/ARC checksum to vibrate the watch and display spoofed alert text for phishing.

Affected products

• Fire-Boltt BSW013: up to and including V0.0.8

Published 2026-10-12. Last modified 2026-10-16.