{"id":"CVE-2021-38111","aliases":["EUVD-2021-24584","GHSA-5jwm-jmmx-2mv2"],"status":"published","title":"The DEF CON 27 badge allows remote attackers to exploit a buffer overflow by sending an oversized...","description":"The DEF CON 27 badge allows remote attackers to exploit a buffer overflow by sending an oversized packet via the NFMI (Near Field Magnetic Induction) protocol.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01332,"percentile":0.71337,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2021-08-04T00:00:00Z","modified":"2026-06-17T04:01:29Z","products":[{"vendor":"defcon","product":"def_con_27_firmware"}],"references":[{"url":"https://defcon.org/html/defcon-29/dc-29-speakers.html#kintigh","tags":["x_transferred","Exploit","Third Party Advisory"]},{"url":"https://github.com/skintigh/defcon27_badge_sdr","tags":["x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-38111"},{"url":"https://github.com/advisories/GHSA-5jwm-jmmx-2mv2"}],"sources":{"cve":[{"id":"CVE-2021-38111","description":"The DEF CON 27 badge allows remote attackers to exploit a buffer overflow by sending an oversized packet via the NFMI (Near Field Magnetic Induction) protocol.","status":"published","published":"2021-08-04T00:00:00Z","modified":"2025-05-05T16:46:25.603Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:33:07.697752Z"}],"euvd":[{"id":"EUVD-2021-24584","description":"The DEF CON 27 badge allows remote attackers to exploit a buffer overflow by sending an oversized packet via the NFMI (Near Field Magnetic Induction) protocol.","status":"published","published":"2021-08-04T00:00:00Z","modified":"2025-05-05T16:46:25Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T20:32:56.053822Z"}],"ghsa":[{"id":"GHSA-5jwm-jmmx-2mv2","title":"The DEF CON 27 badge allows remote attackers to exploit a buffer overflow by sending an oversized...","description":"The DEF CON 27 badge allows remote attackers to exploit a buffer overflow by sending an oversized packet via the NFMI (Near Field Magnetic Induction) protocol.","status":"published","published":"2022-05-24T19:09:55Z","modified":"2023-11-21T18:30:25Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:55:04.479575Z"}],"nvd":[{"id":"CVE-2021-38111","description":"The DEF CON 27 badge allows remote attackers to exploit a buffer overflow by sending an oversized packet via the NFMI (Near Field Magnetic Induction) protocol.","status":"published","published":"2021-08-04T18:15:10.093Z","modified":"2026-06-17T04:01:29.433Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":5.8,"vector":"AV:A/AC:L/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:06:56.562207Z"}]}}