{"id":"CVE-2018-20579","aliases":["EUVD-2018-13133","GHSA-r9mc-297w-w563"],"status":"published","title":"Contiki-NG before 4.2 has a stack-based buffer overflow in the push function in os/lib/json...","description":"Contiki-NG before 4.2 has a stack-based buffer overflow in the push function in os/lib/json/jsonparse.c that allows an out-of-bounds write of an '{' or '[' character.","severity":{"version":"3.0","score":7.1,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.00322,"percentile":0.25339,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2018-12-28T18:00:00Z","modified":"2026-06-17T01:53:07Z","products":[{"vendor":"contiki-ng_project","product":"contiki-ng"}],"references":[{"url":"https://github.com/contiki-ng/contiki-ng/issues/601","tags":["x_refsource_MISC","x_transferred","Mitigation","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-20579"},{"url":"https://github.com/advisories/GHSA-r9mc-297w-w563"}],"sources":{"cve":[{"id":"CVE-2018-20579","description":"Contiki-NG before 4.2 has a stack-based buffer overflow in the push function in os/lib/json/jsonparse.c that allows an out-of-bounds write of an '{' or '[' character.","status":"published","published":"2018-12-28T18:00:00Z","modified":"2024-09-16T18:24:27.131Z","updated_at":"2026-11-02T14:35:00.237825Z"}],"euvd":[{"id":"EUVD-2018-13133","description":"Contiki-NG before 4.2 has a stack-based buffer overflow in the push function in os/lib/json/jsonparse.c that allows an out-of-bounds write of an '{' or '[' character.","status":"published","published":"2018-12-28T18:00:00Z","modified":"2024-09-16T18:24:27Z","updated_at":"2026-11-03T00:55:32.945265Z"}],"ghsa":[{"id":"GHSA-r9mc-297w-w563","title":"Contiki-NG before 4.2 has a stack-based buffer overflow in the push function in os/lib/json...","description":"Contiki-NG before 4.2 has a stack-based buffer overflow in the push function in os/lib/json/jsonparse.c that allows an out-of-bounds write of an '{' or '[' character.","status":"published","published":"2022-05-13T01:19:55Z","modified":"2023-02-01T05:06:14Z","cvss":[{"version":"3.0","score":7.1,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:50:19.669171Z"}],"nvd":[{"id":"CVE-2018-20579","description":"Contiki-NG before 4.2 has a stack-based buffer overflow in the push function in os/lib/json/jsonparse.c that allows an out-of-bounds write of an '{' or '[' character.","status":"published","published":"2018-12-28T18:29:00.317Z","modified":"2026-06-17T01:53:07.437Z","cvss":[{"version":"3.0","score":7.1,"vector":"CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":3.6,"vector":"AV:L/AC:L/Au:N/C:N/I:P/A:P","level":"low","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:04:52.056758Z"}]}}