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CVE-2026-109571

Fire-Boltt BSW013 firmware through V0.0.8 Unauthenticated Heart Rate Disclosure via BLE

Fire-Boltt BSW013 smartwatch firmware through V0.0.8 contains a missing authentication vulnerability that allows unpaired BLE devices to subscribe to the Heart Rate Measurement characteristic (0x2A37). Attackers within Bluetooth range can receive the wearer's live heart rate readings without pairing, bonding, or any confirmation on the watch.

CVSS 4.0 · 2.3 Low EPSS < 1% KEV · Not listed
Vendors
Fire-boltt
Products
Bsw013
CVE-2026-109570

Fire-Boltt BSW013 through V0.0.8 Unauthenticated BLE Notification Injection

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.

CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
Vendors
Fire-boltt
Products
Bsw013