{"id":"CVE-2021-25437","aliases":["EUVD-2021-12333","GHSA-36pg-q9f9-m4xv"],"status":"published","title":"Improper access control vulnerability in Tizen FOTA service prior to Firmware update JUL-2021...","description":"Improper access control vulnerability in Tizen FOTA service prior to Firmware update JUL-2021 Release allows attackers to arbitrary code execution by replacing FOTA update file.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.02352,"percentile":0.83929,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20","CWE-863"],"published":"2021-07-08T13:47:11Z","modified":"2026-06-17T03:42:04Z","products":[{"vendor":"linux","product":"tizen"},{"vendor":"samsung mobile","product":"tizen wearable devices"}],"references":[{"url":"https://security.samsungmobile.com/serviceWeb.smsb?year=2021\u0026month=7","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-25437"},{"url":"https://github.com/advisories/GHSA-36pg-q9f9-m4xv"}],"sources":{"cve":[{"id":"CVE-2021-25437","description":"Improper access control vulnerability in Tizen FOTA service prior to Firmware update JUL-2021 Release allows attackers to arbitrary code execution by replacing FOTA update file.","status":"published","published":"2021-07-08T13:47:11Z","modified":"2024-08-03T20:03:05.658Z","cwes":["CWE-20"],"updated_at":"2026-11-02T14:32:59.802172Z"}],"euvd":[{"id":"EUVD-2021-12333","description":"Improper access control vulnerability in Tizen FOTA service prior to Firmware update JUL-2021 Release allows attackers to arbitrary code execution by replacing FOTA update file.","status":"published","published":"2021-07-08T13:47:11Z","modified":"2024-08-03T20:03:05Z","updated_at":"2026-11-03T03:24:52.867371Z"}],"ghsa":[{"id":"GHSA-36pg-q9f9-m4xv","title":"Improper access control vulnerability in Tizen FOTA service prior to Firmware update JUL-2021...","description":"Improper access control vulnerability in Tizen FOTA service prior to Firmware update JUL-2021 Release allows attackers to arbitrary code execution by replacing FOTA update file.","status":"published","published":"2022-05-24T19:07:15Z","modified":"2023-01-27T05:03:21Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-863"],"updated_at":"2026-11-02T14:42:13.826528Z"}],"nvd":[{"id":"CVE-2021-25437","description":"Improper access control vulnerability in Tizen FOTA service prior to Firmware update JUL-2021 Release allows attackers to arbitrary code execution by replacing FOTA update file.","status":"published","published":"2021-07-08T14:15:08.857Z","modified":"2026-06-17T03:42:04.993Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:06:55.259633Z"}]}}