What’s Vulnerable › Vulnerabilities

CVE-2021-35951

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-12-26 · updated 2026-06-17

Description

fastrack Reflex 2.0 W307S_REFLEX_v90.89 Activity Tracker allows an Unauthenticated Remote attacker to send a malicious firmware update via BLE and brick the device.

Affected products

• Fastrack Reflex 2.0 Firmware: 90.89

References

• https://payatu.com/advisory/fastrack-reflex-unauthenticated-firmware-update
• https://www.fastrack.in/shop/watch-smart-wearables-reflex-2
• https://payatu.com/advisory/fastrack-reflex-unauthenticated-firmware-update
• https://www.fastrack.in/shop/watch-smart-wearables-reflex-2

Get alerted when CVE-2021-35951 or the next vulnerability affects your stack