{"id":"CVE-2021-35954","aliases":["EUVD-2021-22589","GHSA-wh39-w6w2-hmvf"],"status":"published","title":"fastrack Reflex 2.0 W307S_REFLEX_v90.89 Activity Tracker allows physically proximate attackers to...","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.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00334,"percentile":0.27086,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2022-12-26T00:00:00Z","modified":"2026-06-17T03:57:59Z","products":[{"vendor":"fastrack","product":"reflex_2.0_firmware"}],"references":[{"url":"https://www.fastrack.in/shop/watch-smart-wearables-reflex-2","tags":["x_transferred","Broken Link","Product"]},{"url":"https://payatu.com/advisory/dumping-and-re-flashing-firmware-fastrack-reflex","tags":["x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-35954"},{"url":"https://github.com/advisories/GHSA-wh39-w6w2-hmvf"}],"sources":{"cve":[{"id":"CVE-2021-35954","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.","status":"published","published":"2022-12-26T00:00:00Z","modified":"2025-04-14T18:29:00.391Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"high","assessor":"adp"}],"updated_at":"2026-11-02T14:33:10.204494Z"}],"euvd":[{"id":"EUVD-2021-22589","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.","status":"published","published":"2022-12-26T00:00:00Z","modified":"2025-04-14T18:29:00Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T20:52:32.642133Z"}],"ghsa":[{"id":"GHSA-wh39-w6w2-hmvf","title":"fastrack Reflex 2.0 W307S_REFLEX_v90.89 Activity Tracker allows physically proximate attackers to...","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.","status":"published","published":"2022-12-26T06:30:22Z","modified":"2023-02-03T05:01:48Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T14:53:02.755418Z"}],"nvd":[{"id":"CVE-2021-35954","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.","status":"published","published":"2022-12-26T06:15:10.507Z","modified":"2026-06-17T03:57:59.96Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"high","assessor":"primary"},{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","level":"high","assessor":"secondary"}],"updated_at":"2026-11-02T14:07:07.323379Z"}]}}