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CVE-2026-109571— Fire-Boltt BSW013 firmware through V0.0.8 Unauthenticated Heart Rate Disclosure via BLE

Quick assessment

Affected
Fire-Boltt BSW013
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Fire-Boltt BSW013 智能手表固件（V0.0.8 及以下版本）存在一个缺失认证的漏洞，该漏洞允许未配对的蓝牙低功耗（BLE）设备订阅心率测量特性（0x2A37）。处于蓝牙范围内的攻击者无需配对、绑定或在手表上获得任何确认，即可接收佩戴者的实时心率数据。

CVSS 4.3 · Medium EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1040.002

Affected Version Matrix 1

VendorProduct Version RangeStatus
Fire-Boltt BSW013 ≤ V0.0.8 affected
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I. Basic Information for CVE-2026-109571

Vulnerability Information
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Vulnerability Title
Fire-Boltt BSW013 firmware through V0.0.8 Unauthenticated Heart Rate Disclosure via BLE
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Fire-Boltt BSW013 0 ~ V0.0.8 -

II. Public POCs for CVE-2026-109571

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-109571

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Vendor Advisories for CVE-2026-109571 (1)

Proof of Concept for CVE-2026-109571 (1)

IV. Related Vulnerabilities

Same product: BSW013
Same vendor: Fire-Boltt
Same weakness: CWE-306

V. Comments for CVE-2026-109571

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