{"cve":"CVE-2021-35952","nvd":{"published":"2022-12-26T06:15:10.397","modified":"2026-06-17T03:57:59.517","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":5.3},"cwes":[],"references":["https://payatu.com/advisory/lack-of-bluetooth-le-pairing-fastrack-reflex","https://www.fastrack.in/shop/watch-smart-wearables-reflex-2","https://payatu.com/advisory/lack-of-bluetooth-le-pairing-fastrack-reflex","https://www.fastrack.in/shop/watch-smart-wearables-reflex-2"],"products":["fastrack:reflex_2.0_firmware"],"source":"nvd","synced_at":"2026-10-19T21:37:31.370122805+00:00"},"epss":{"cve":"CVE-2021-35952","score":0.00607,"percentile":0.49038,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}