What is CVE-2026-109570?

CVE-2026-109570 is a medium-severity vulnerability in Fire-Boltt Bsw013, classified under Missing Authentication for Critical Function. CVSS score: 4.3/10. Published 2026-10-12.

How severe is CVE-2026-109570?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Fire-Boltt Bsw013

CVE-2026-109570

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.

Vulnerability class: Broken Authentication

Published 2026-10-12.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Fire-Boltt Bsw013

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

github.com/Pratham-16/fireboltt-Bsw013-BLE-vuln (technical-description, exploit)
www.vulncheck.com/advisories/fire-boltt-bsw013-through-v0-0.8-unauthenticated-b… (third-party-advisory)

Frequently asked questions

What is CVE-2026-109570?: CVE-2026-109570 is a medium-severity vulnerability in Fire-Boltt Bsw013, classified under Missing Authentication for Critical Function. CVSS score: 4.3/10. Published 2026-10-12.
How severe is CVE-2026-109570?: Medium severity. CVSS v3 base score is 4.3 out of 10.