CVE-2026-109571
LOW
INFO
Priority: 0.00
BB Relevance:
50/100
Published: 2026-10-12
Modified: 2026-10-26
First seen: 2026-10-29
Status: active
Attack Surface
Adjacent
Low Complexity
No Auth
No Interaction
CVSS Vector Breakdown
AV:
Adjacent
AC:
Low
PR:
None
UI:
None
AT:
Present
VC:
Low
VI:
None
VA:
None
Description
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.