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CVE-2021-35951

Status: ModifiedHigh (7.5)—

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.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Fastrack — Reflex 2.0 Firmware

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2021-35951",
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          "options": [
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          "version": "2.0.3",
          "timestamp": "2025-04-14T14:49:17.526849Z"
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    }
  ],
  "lastModified": "2026-06-17T03:57:59.350",
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