{"id":"CVE-2020-18731","aliases":["EUVD-2020-10648","GHSA-v872-3chq-4hc9"],"status":"published","title":"A segmentation violation in the Iec104_Deal_FirmUpdate function of IEC104 v1.0 allows attackers...","description":"A segmentation violation in the Iec104_Deal_FirmUpdate function of IEC104 v1.0 allows attackers to cause a denial of service (DOS).","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01406,"percentile":0.72825,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20","CWE-476"],"published":"2021-08-23T20:07:13Z","modified":"2026-06-17T02:59:26Z","products":[{"vendor":"iec104_project","product":"iec104"}],"references":[{"url":"https://cwe.mitre.org/data/definitions/476.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://github.com/airpig2011/IEC104/issues/5","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-18731"},{"url":"https://github.com/advisories/GHSA-v872-3chq-4hc9"}],"sources":{"cve":[{"id":"CVE-2020-18731","description":"A segmentation violation in the Iec104_Deal_FirmUpdate function of IEC104 v1.0 allows attackers to cause a denial of service (DOS).","status":"published","published":"2021-08-23T20:07:13Z","modified":"2024-08-04T14:08:29.75Z","updated_at":"2026-11-02T14:35:59.434367Z"}],"euvd":[{"id":"EUVD-2020-10648","description":"A segmentation violation in the Iec104_Deal_FirmUpdate function of IEC104 v1.0 allows attackers to cause a denial of service (DOS).","status":"published","published":"2021-08-23T20:07:13Z","modified":"2024-08-04T14:08:29Z","updated_at":"2026-11-03T03:07:26.397496Z"}],"ghsa":[{"id":"GHSA-v872-3chq-4hc9","title":"A segmentation violation in the Iec104_Deal_FirmUpdate function of IEC104 v1.0 allows attackers...","description":"A segmentation violation in the Iec104_Deal_FirmUpdate function of IEC104 v1.0 allows attackers to cause a denial of service (DOS).","status":"published","published":"2022-05-24T19:11:53Z","modified":"2023-01-27T05:08:07Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-20","CWE-476"],"updated_at":"2026-11-02T14:43:15.040364Z"}],"nvd":[{"id":"CVE-2020-18731","description":"A segmentation violation in the Iec104_Deal_FirmUpdate function of IEC104 v1.0 allows attackers to cause a denial of service (DOS).","status":"published","published":"2021-08-23T21:15:09.327Z","modified":"2026-06-17T02:59:26.467Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:06:45.704484Z"}]}}