What is CVE-2021-35954?

CVE-2021-35954 is a high-severity vulnerability in Fastrack Reflex 2.0. CVSS score: 8.1/10. Published 2022-12-26.

How severe is CVE-2021-35954?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Fastrack Reflex 2.0

CVE-2021-35954

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.

EPSS: 0.003 (24.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

Affected products

Fastrack Reflex_2.0
Fastrack Reflex_2.0_firmware — versions 90.89
N/a — versions n/a

References

cve@mitre.org (Product, Broken Link)
cve@mitre.org (Third Party Advisory)

Frequently asked questions

What is CVE-2021-35954?: CVE-2021-35954 is a high-severity vulnerability in Fastrack Reflex 2.0. CVSS score: 8.1/10. Published 2022-12-26.
How severe is CVE-2021-35954?: High severity. CVSS v3 base score is 8.1 out of 10.