CVE-2021-35954

HighCVSS 8.1/10Last modified Jun 17, 2026

Description

fastrack Reflex 2.0 W307S_REFLEX_v90.89 Activity Tracker allows physically proximate attackers to dump the firmware, flash custom malicious firmware, and brick the device via the Serial Wire Debug (SWD) feature.

Metrics

CVSS 3.1 8.1/10CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Affected software

No affected versions have been published.

Timeline

Published
Dec 26, 2022
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-35954: High severity, CVSS 8.1 | Vulnix