VulnerabilityModified
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.
HIGH 8.1EPSS 0.33%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.33%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.1 HIGHCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
- EPSS
- 0.33% probability · 25th percentile
- CISA KEV
- Not listed
- Affected
- fastrack/reflex 2.0 firmware
- Source
- cve@mitre.org
References
- https://payatu.com/advisory/dumping-and-re-flashing-firmware-fastrack-reflexThird Party Advisory
- https://www.fastrack.in/shop/watch-smart-wearables-reflex-2Broken Link, Product
- https://payatu.com/advisory/dumping-and-re-flashing-firmware-fastrack-reflexThird Party Advisory
- https://www.fastrack.in/shop/watch-smart-wearables-reflex-2Broken Link, Product
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.