CVE-2026-109571CWE-306

CVE-2026-109571

Medium · published October 13, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
6.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
2.3 · CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00177 · 6.9th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-10-13T01:17Z
References (2)
https://github.com/Pratham-16/fireboltt-Bsw013-BLE-vuln · [email protected]https://www.vulncheck.com/advisories/fire-boltt-bsw013-firmware-through-v0-0.8-unauthenticated-heart-rate-disclosure-via-ble · [email protected]
EPSS history
Timeline
  • 14 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 12 OCT 20:55Z
    Fire-Boltt BSW013 firmware through V0.0.8 Unauthenticated Heart Rate Disclosure via BLE
    cvelistv5
  • 12 OCT 20:55Z
    Fire-Boltt BSW013 firmware through V0.0.8 Unauthenticated Heart Rate Disclosure via BLE
    cvelistv5