{"id":"CVE-2019-8359","aliases":["EUVD-2019-17749","GHSA-pcw5-87gf-vhfh"],"status":"published","title":"An issue was discovered in Contiki-NG through 4.2 and Contiki through 3.0. An out of bounds write...","description":"An issue was discovered in Contiki-NG through 4.3 and Contiki through 3.0. An out of bounds write is present in the data section during 6LoWPAN fragment re-assembly in the face of forged fragment offsets in os/net/ipv6/sicslowpan.c.","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":"2026-11-08","score":0.02174,"percentile":0.82434,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2020-04-23T12:33:35Z","modified":"2026-06-17T02:41:53Z","products":[{"vendor":"contiki-ng","product":"contiki-ng"},{"vendor":"contiki-os","product":"contiki"}],"references":[{"url":"https://github.com/contiki-ng/contiki-ng/pull/972","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory"]},{"url":"https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.4","tags":["x_refsource_CONFIRM","x_transferred","Release Notes","Third Party Advisory"]},{"url":"https://www.usenix.org/system/files/sec20summer_clements_prepub.pdf","tags":["x_refsource_MISC","x_transferred","Technical Description","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-8359"},{"url":"https://github.com/advisories/GHSA-pcw5-87gf-vhfh"}],"sources":{"cve":[{"id":"CVE-2019-8359","description":"An issue was discovered in Contiki-NG through 4.3 and Contiki through 3.0. An out of bounds write is present in the data section during 6LoWPAN fragment re-assembly in the face of forged fragment offsets in os/net/ipv6/sicslowpan.c.","status":"published","published":"2020-04-23T12:33:35Z","modified":"2024-08-04T21:17:30.652Z","updated_at":"2026-11-02T14:20:21.703364Z"}],"euvd":[{"id":"EUVD-2019-17749","description":"An issue was discovered in Contiki-NG through 4.3 and Contiki through 3.0. An out of bounds write is present in the data section during 6LoWPAN fragment re-assembly in the face of forged fragment offsets in os/net/ipv6/sicslowpan.c.","status":"published","published":"2020-04-23T12:33:35Z","modified":"2024-08-04T21:17:30Z","updated_at":"2026-11-03T03:06:42.975045Z"}],"ghsa":[{"id":"GHSA-pcw5-87gf-vhfh","title":"An issue was discovered in Contiki-NG through 4.2 and Contiki through 3.0. An out of bounds write...","description":"An issue was discovered in Contiki-NG through 4.2 and Contiki through 3.0. An out of bounds write is present in the data section during 6LoWPAN fragment re-assembly in the face of forged fragment offsets in os/net/ipv6/sicslowpan.c.","status":"published","published":"2022-05-24T17:16:16Z","modified":"2023-01-29T05:02:19Z","updated_at":"2026-11-02T14:45:03.465346Z"}],"nvd":[{"id":"CVE-2019-8359","description":"An issue was discovered in Contiki-NG through 4.3 and Contiki through 3.0. An out of bounds write is present in the data section during 6LoWPAN fragment re-assembly in the face of forged fragment offsets in os/net/ipv6/sicslowpan.c.","status":"published","published":"2020-04-23T15:15:13.903Z","modified":"2026-06-17T02:41:53.773Z","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-787"],"updated_at":"2026-11-02T14:05:46.451008Z"}]}}