{"id":"CVE-2019-12797","aliases":["EUVD-2019-4380","GHSA-ph78-5q58-gqxj"],"status":"published","title":"A clone version of an ELM327 OBD2 Bluetooth device has a hardcoded PIN, leading to arbitrary...","description":"A clone version of an ELM327 OBD2 Bluetooth device has a hardcoded PIN, leading to arbitrary commands to an OBD-II bus of a vehicle.","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":"2026-11-09","score":0.01208,"percentile":0.68611,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-798"],"published":"2019-07-31T18:21:40Z","modified":"2026-06-17T02:15:29Z","products":[{"vendor":"elmelectronics","product":"elm27_firmware"}],"references":[{"url":"https://www.kth.se/polopoly_fs/1.914060.1561621279%21/Ludvig%20and%20Daniel_final_dongles.pdf","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://www.kth.se/polopoly_fs/1.917488.1564430206%21/elm327.pdf","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-12797"},{"url":"https://www.kth.se/polopoly_fs/1.914060.1561621279!/Ludvig%20and%20Daniel_final_dongles.pdf"},{"url":"https://www.kth.se/polopoly_fs/1.914063.1561621564!/Marstorp%20%26%20Lindstrom%2C%20Security%20Testing%20of%20an%20OBD-II%20Connected%20IoT%20Device.pdf"},{"url":"https://www.kth.se/polopoly_fs/1.917488.1564430206!/elm327.pdf"},{"url":"https://github.com/advisories/GHSA-ph78-5q58-gqxj"}],"sources":{"cve":[{"id":"CVE-2019-12797","description":"A clone version of an ELM327 OBD2 Bluetooth device has a hardcoded PIN, leading to arbitrary commands to an OBD-II bus of a vehicle.","status":"published","published":"2019-07-31T18:21:40Z","modified":"2024-08-04T23:32:54.843Z","updated_at":"2026-11-02T14:20:24.025419Z"}],"euvd":[{"id":"EUVD-2019-4380","description":"A clone version of an ELM327 OBD2 Bluetooth device has a hardcoded PIN, leading to arbitrary commands to an OBD-II bus of a vehicle.","status":"published","published":"2019-07-31T18:21:40Z","modified":"2024-08-04T23:32:54Z","updated_at":"2026-11-03T02:40:44.884887Z"}],"ghsa":[{"id":"GHSA-ph78-5q58-gqxj","title":"A clone version of an ELM327 OBD2 Bluetooth device has a hardcoded PIN, leading to arbitrary...","description":"A clone version of an ELM327 OBD2 Bluetooth device has a hardcoded PIN, leading to arbitrary commands to an OBD-II bus of a vehicle, as demonstrated by turning off the vehicle's lights.","status":"published","published":"2022-05-24T16:51:52Z","modified":"2023-03-11T05:06:34Z","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-798"],"updated_at":"2026-11-02T14:54:19.253359Z"}],"nvd":[{"id":"CVE-2019-12797","description":"A clone version of an ELM327 OBD2 Bluetooth device has a hardcoded PIN, leading to arbitrary commands to an OBD-II bus of a vehicle.","status":"published","published":"2019-07-31T19:15:15.823Z","modified":"2026-06-17T02:15:29.697Z","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":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-798"],"updated_at":"2026-11-02T14:05:21.892729Z"}]}}