CVE-2026-109571 Fire-Boltt BSW013 firmware through V0.0.8 Unauthenticated Heart Rate Disclosure via BLE
Unpaired Bluetooth devices can read live heart rate data from Fire-Boltt BSW013 smartwatches without authentication or user consent.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-109571?
CVE-2026-109571 is a low-severity missing authorization vulnerability in Fire-Boltt BSW013, published on 12 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-306
Which versions are affected by CVE-2026-109571?
How do I fix CVE-2026-109571?
No fix has been published for CVE-2026-109571 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-109571 being exploited?
There is no known exploitation of CVE-2026-109571 in the wild and no public exploit code.
Sources
Also known as GHSA-hj6p-cc45-4m6g.