{"id":"CVE-2025-20939","aliases":["EUVD-2025-10073","GHSA-h477-9mjj-79jx"],"status":"published","title":"Improper authorization in wireless download protocol in Galaxy Watch prior to SMR Apr-2025...","description":"Improper authorization in wireless download protocol in Galaxy Watch prior to SMR Apr-2025 Release 1 allows physical attackers to update device unique identifier of Watch devices.","severity":{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00196,"percentile":0.0942,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2025-04-08T04:49:41Z","modified":"2026-06-17T08:42:14Z","products":[{"vendor":"samsung","product":"wear_os"},{"vendor":"samsung mobile","product":"samsung mobile devices"}],"references":[{"url":"https://security.samsungmobile.com/securityUpdate.smsb?year=2025\u0026month=04","tags":["Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-20939"},{"url":"https://github.com/advisories/GHSA-h477-9mjj-79jx"}],"sources":{"cve":[{"id":"CVE-2025-20939","description":"Improper authorization in wireless download protocol in Galaxy Watch prior to SMR Apr-2025 Release 1 allows physical attackers to update device unique identifier of Watch devices.","status":"published","published":"2025-04-08T04:49:41.297Z","modified":"2025-04-08T14:51:15.611Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:32:25.982948Z"}],"euvd":[{"id":"EUVD-2025-10073","description":"Improper authorization in wireless download protocol in Galaxy Watch prior to SMR Apr-2025 Release 1 allows physical attackers to update device unique identifier of Watch devices.","status":"published","published":"2025-04-08T04:49:41Z","modified":"2025-04-08T14:51:15Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L","level":"medium"}],"updated_at":"2026-11-02T20:52:40.053562Z"}],"ghsa":[{"id":"GHSA-h477-9mjj-79jx","title":"Improper authorization in wireless download protocol in Galaxy Watch prior to SMR Apr-2025...","description":"Improper authorization in wireless download protocol in Galaxy Watch prior to SMR Apr-2025 Release 1 allows physical attackers to update device unique identifier of Watch devices.","status":"published","published":"2025-04-08T06:30:39Z","modified":"2025-04-08T06:30:47Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L","level":"medium"}],"updated_at":"2026-11-02T15:00:50.553011Z"}],"nvd":[{"id":"CVE-2025-20939","description":"Improper authorization in wireless download protocol in Galaxy Watch prior to SMR Apr-2025 Release 1 allows physical attackers to update device unique identifier of Watch devices.","status":"published","published":"2025-04-08T05:15:38.293Z","modified":"2026-06-17T08:42:14.47Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:L","level":"medium","assessor":"secondary"}],"updated_at":"2026-11-02T14:10:59.48027Z"}]}}