CVE-2021-35954 — HIGH (8.1)

Vulnerability 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 Score

8.1

HIGH

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

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Fastrack	Reflex 2.0 Firmware	90.89
Fastrack	Reflex 2.0	-

References

https://payatu.com/advisory/dumping-and-re-flashing-firmware-fastrack-reflexThird Party Advisory
https://www.fastrack.in/shop/watch-smart-wearables-reflex-2Broken LinkProduct
https://payatu.com/advisory/dumping-and-re-flashing-firmware-fastrack-reflexThird Party Advisory
https://www.fastrack.in/shop/watch-smart-wearables-reflex-2Broken LinkProduct

FAQ

What is CVE-2021-35954?

CVE-2021-35954 is a vulnerability with a CVSS score of 8.1 (HIGH). 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 (SW...

How severe is CVE-2021-35954?

CVE-2021-35954 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-35954?

Check the references section above for vendor advisories and patch information. Affected products include: Fastrack Reflex 2.0 Firmware, Fastrack Reflex 2.0.