{"id":"CVE-2020-13602","aliases":["EUVD-2020-5847"],"status":"published","title":"Remote Denial of Service in LwM2M do_write_op_tlv","description":"Remote Denial of Service in LwM2M do_write_op_tlv. Zephyr versions \u003e= 1.14.2, \u003e= 2.2.0 contain Improper Input Validation (CWE-20), Loop with Unreachable Exit Condition ('Infinite Loop') (CWE-835). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-g9mg-fj58-6fqh","severity":{"version":"3.1","score":4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00297,"percentile":0.22592,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20","CWE-835"],"published":"2021-05-24T21:40:29Z","modified":"2026-06-17T02:53:26Z","products":[{"vendor":"zephyrproject","product":"zephyr"},{"vendor":"zephyrproject-rtos","product":"zephyr"}],"references":[{"url":"http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-g9mg-fj58-6fqh","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]}],"sources":{"cve":[{"id":"CVE-2020-13602","title":"Remote Denial of Service in LwM2M do_write_op_tlv","description":"Remote Denial of Service in LwM2M do_write_op_tlv. Zephyr versions \u003e= 1.14.2, \u003e= 2.2.0 contain Improper Input Validation (CWE-20), Loop with Unreachable Exit Condition ('Infinite Loop') (CWE-835). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-g9mg-fj58-6fqh","status":"published","published":"2021-05-24T21:40:29.344Z","modified":"2024-09-17T02:56:50.405Z","cvss":[{"version":"3.1","score":4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-20","CWE-835"],"updated_at":"2026-11-02T14:35:53.868619Z"}],"euvd":[{"id":"EUVD-2020-5847","description":"Remote Denial of Service in LwM2M do_write_op_tlv. Zephyr versions \u003e= 1.14.2, \u003e= 2.2.0 contain Improper Input Validation (CWE-20), Loop with Unreachable Exit Condition ('Infinite Loop') (CWE-835). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-g9mg-fj58-6fqh","status":"published","published":"2021-05-24T21:40:29Z","modified":"2024-09-17T02:56:50Z","cvss":[{"version":"3.1","score":4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-03T00:28:35.984836Z"}],"nvd":[{"id":"CVE-2020-13602","description":"Remote Denial of Service in LwM2M do_write_op_tlv. Zephyr versions \u003e= 1.14.2, \u003e= 2.2.0 contain Improper Input Validation (CWE-20), Loop with Unreachable Exit Condition ('Infinite Loop') (CWE-835). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-g9mg-fj58-6fqh","status":"published","published":"2021-05-25T17:15:07.893Z","modified":"2026-06-17T02:53:26.533Z","cvss":[{"version":"3.1","score":4,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:N/I:N/A:P","level":"low","assessor":"primary"}],"cwes":["CWE-20","CWE-835"],"updated_at":"2026-11-02T14:06:43.288951Z"}]}}