{"id":"CVE-2020-5646","aliases":["EUVD-2020-26807","GHSA-rhf6-xfw9-38h3"],"status":"published","title":"NULL pointer dereferences vulnerability in TCP/IP function included in the firmware of GT14 Model...","description":"NULL pointer dereferences vulnerability in TCP/IP function included in the firmware of GT14 Model of GOT 1000 series (GT1455-QTBDE CoreOS version \"05.65.00.BD\" and earlier, GT1450-QMBDE CoreOS version \"05.65.00.BD\" and earlier, GT1450-QLBDE CoreOS version \"05.65.00.BD\" and earlier, GT1455HS-QTBDE CoreOS version \"05.65.00.BD\" and earlier, and GT1450HS-QMBDE CoreOS version \"05.65.00.BD\" and earlier) allows a remote unauthenticated attacker to stop the network functions of the products via a specially crafted packet.","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":"2026-11-11","score":0.04173,"percentile":0.91028,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-476"],"published":"2020-11-06T02:06:28Z","modified":"2026-06-17T03:21:45Z","products":[{"vendor":"mitsubishi electric corporation","product":"gt14 model of got 1000 series"},{"vendor":"mitsubishielectric","product":"coreos"}],"references":[{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-20-310-02","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://www.mitsubishielectric.com/en/psirt/vulnerability/pdf/2020-014_en.pdf","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://www.mitsubishielectric.co.jp/psirt/vulnerability/pdf/2020-014.pdf","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://jvn.jp/vu/JVNVU99562395/index.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-5646"},{"url":"https://github.com/advisories/GHSA-rhf6-xfw9-38h3"}],"sources":{"cve":[{"id":"CVE-2020-5646","description":"NULL pointer dereferences vulnerability in TCP/IP function included in the firmware of GT14 Model of GOT 1000 series (GT1455-QTBDE CoreOS version \"05.65.00.BD\" and earlier, GT1450-QMBDE CoreOS version \"05.65.00.BD\" and earlier, GT1450-QLBDE CoreOS version \"05.65.00.BD\" and earlier, GT1455HS-QTBDE CoreOS version \"05.65.00.BD\" and earlier, and GT1450HS-QMBDE CoreOS version \"05.65.00.BD\" and earlier) allows a remote unauthenticated attacker to stop the network functions of the products via a specially crafted packet.","status":"published","published":"2020-11-06T02:06:28Z","modified":"2024-08-04T08:39:25.356Z","updated_at":"2026-11-02T14:35:47.22408Z"}],"euvd":[{"id":"EUVD-2020-26807","description":"NULL pointer dereferences vulnerability in TCP/IP function included in the firmware of GT14 Model of GOT 1000 series (GT1455-QTBDE CoreOS version \"05.65.00.BD\" and earlier, GT1450-QMBDE CoreOS version \"05.65.00.BD\" and earlier, GT1450-QLBDE CoreOS version \"05.65.00.BD\" and earlier, GT1455HS-QTBDE CoreOS version \"05.65.00.BD\" and earlier, and GT1450HS-QMBDE CoreOS version \"05.65.00.BD\" and earlier) allows a remote unauthenticated attacker to stop the network functions of the products via a specially crafted packet.","status":"published","published":"2020-11-06T02:06:28Z","modified":"2024-08-04T08:39:25Z","updated_at":"2026-11-03T03:08:06.272693Z"}],"ghsa":[{"id":"GHSA-rhf6-xfw9-38h3","title":"NULL pointer dereferences vulnerability in TCP/IP function included in the firmware of GT14 Model...","description":"NULL pointer dereferences vulnerability in TCP/IP function included in the firmware of GT14 Model of GOT 1000 series (GT1455-QTBDE CoreOS version ’05.65.00.BD’ and earlier, GT1450-QMBDE CoreOS version ’05.65.00.BD’ and earlier, GT1450-QLBDE CoreOS version ’05.65.00.BD’ and earlier, GT1455HS-QTBDE CoreOS version ’05.65.00.BD’ and earlier, and GT1450HS-QMBDE CoreOS version ’05.65.00.BD’ and earlier) allows a remote unauthenticated attacker to stop the network functions of the products via a specially crafted packet.","status":"published","published":"2022-05-24T22:28:56Z","modified":"2023-01-30T05:05:19Z","cwes":["CWE-476"],"updated_at":"2026-11-02T14:47:14.859967Z"}],"nvd":[{"id":"CVE-2020-5646","description":"NULL pointer dereferences vulnerability in TCP/IP function included in the firmware of GT14 Model of GOT 1000 series (GT1455-QTBDE CoreOS version \"05.65.00.BD\" and earlier, GT1450-QMBDE CoreOS version \"05.65.00.BD\" and earlier, GT1450-QLBDE CoreOS version \"05.65.00.BD\" and earlier, GT1455HS-QTBDE CoreOS version \"05.65.00.BD\" and earlier, and GT1450HS-QMBDE CoreOS version \"05.65.00.BD\" and earlier) allows a remote unauthenticated attacker to stop the network functions of the products via a specially crafted packet.","status":"published","published":"2020-11-06T03:15:17.48Z","modified":"2026-06-17T03:21:45.03Z","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":"2026-11-02T14:06:21.80969Z"}]}}