PatchTheCVE: fastrackhttps://patchthecve.com/CVEs with upgrade or downgrade fix stepsCVE-2021-35954: fastrack Reflex 2.0 W307S_REFLEX_v90.89 Activity Tracker allows physically proximate attackers to dump the firhttps://patchthecve.com/cve/CVE-2021-35954.htmlhttps://patchthecve.com/cve/CVE-2021-35954.htmlWed, 17 Jun 2026 03:57:59 +0000HIGH 8.1: 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.CVE-2021-35953: fastrack Reflex 2.0 W307S_REFLEX_v90.89 Activity Tracker allows a Remote attacker to cause a Denial of Servicehttps://patchthecve.com/cve/CVE-2021-35953.htmlhttps://patchthecve.com/cve/CVE-2021-35953.htmlWed, 17 Jun 2026 03:57:59 +0000HIGH 7.5: fastrack Reflex 2.0 W307S_REFLEX_v90.89 Activity Tracker allows a Remote attacker to cause a Denial of Service (device outage) via crafted choices of the last three bytes of a characteristic value.CVE-2021-35952: fastrack Reflex 2.0 W307S_REFLEX_v90.89 Activity Tracker allows a Remote attacker to change the time, date, anhttps://patchthecve.com/cve/CVE-2021-35952.htmlhttps://patchthecve.com/cve/CVE-2021-35952.htmlWed, 17 Jun 2026 03:57:59 +0000MEDIUM 5.3: fastrack Reflex 2.0 W307S_REFLEX_v90.89 Activity Tracker allows a Remote attacker to change the time, date, and month via Bluetooth LE Characteristics on handle 0x0017.CVE-2021-35951: fastrack Reflex 2.0 W307S_REFLEX_v90.89 Activity Tracker allows an Unauthenticated Remote attacker to send a mhttps://patchthecve.com/cve/CVE-2021-35951.htmlhttps://patchthecve.com/cve/CVE-2021-35951.htmlWed, 17 Jun 2026 03:57:59 +0000HIGH 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.