{"id":"CVE-2021-38386","aliases":["EUVD-2021-24838","GHSA-hj2m-f3h3-95w9"],"status":"published","title":"In Contiki 3.0, a buffer overflow in the Telnet service allows remote attackers to cause a denial...","description":"In Contiki 3.0, a buffer overflow in the Telnet service allows remote attackers to cause a denial of service because the ls command is mishandled when a directory has many files with long names.","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":0.01291,"percentile":0.70629,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2021-08-10T18:59:39Z","modified":"2026-06-17T04:01:59Z","products":[{"vendor":"contiki-os","product":"contiki"}],"references":[{"url":"https://github.com/contiki-os/contiki/issues/2687","tags":["x_refsource_MISC","x_transferred","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-38386"},{"url":"https://github.com/advisories/GHSA-hj2m-f3h3-95w9"}],"sources":{"cve":[{"id":"CVE-2021-38386","description":"In Contiki 3.0, a buffer overflow in the Telnet service allows remote attackers to cause a denial of service because the ls command is mishandled when a directory has many files with long names.","status":"published","published":"2021-08-10T18:59:39Z","modified":"2024-08-04T01:37:16.515Z","updated_at":"2026-11-02T14:33:07.349244Z"}],"euvd":[{"id":"EUVD-2021-24838","description":"In Contiki 3.0, a buffer overflow in the Telnet service allows remote attackers to cause a denial of service because the ls command is mishandled when a directory has many files with long names.","status":"published","published":"2021-08-10T18:59:39Z","modified":"2024-08-04T01:37:16Z","updated_at":"2026-11-03T03:24:25.244479Z"}],"ghsa":[{"id":"GHSA-hj2m-f3h3-95w9","title":"In Contiki 3.0, a buffer overflow in the Telnet service allows remote attackers to cause a denial...","description":"In Contiki 3.0, a buffer overflow in the Telnet service allows remote attackers to cause a denial of service because the ls command is mishandled when a directory has many files with long names.","status":"published","published":"2022-05-24T19:10:31Z","modified":"2023-01-30T05:01:16Z","cwes":["CWE-120"],"updated_at":"2026-11-02T14:46:22.480874Z"}],"nvd":[{"id":"CVE-2021-38386","description":"In Contiki 3.0, a buffer overflow in the Telnet service allows remote attackers to cause a denial of service because the ls command is mishandled when a directory has many files with long names.","status":"published","published":"2021-08-10T19:15:07.827Z","modified":"2026-06-17T04:01:59.937Z","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-120"],"updated_at":"2026-11-02T14:06:56.943671Z"}]}}