{"id":"CVE-2024-40494","aliases":["EUVD-2024-38481","GHSA-h9p7-c5rq-hwjj"],"status":"published","title":"Buffer Overflow in coap_msg.c in FreeCoAP allows remote attackers to execute arbitrary code or...","description":"Buffer Overflow in coap_msg.c in FreeCoAP allows remote attackers to execute arbitrary code or cause a denial of service (stack buffer overflow) via a crafted packet.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-09","score":0.0117,"percentile":0.67641,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2024-10-22T00:00:00Z","modified":"2026-10-28T02:30:26Z","products":[{"vendor":"keith-cullen","product":"freecoap"},{"vendor":"keithcullen","product":"freecoap"}],"references":[{"url":"https://github.com/dqp10515/security/tree/main/FreeCoAP_bug","tags":["Exploit","web"]},{"url":"https://gist.github.com/dqp10515/e9d7d663cb89187bfe7b39bb3aeb0113","tags":["Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-40494","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-h9p7-c5rq-hwjj"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/40xxx/CVE-2024-40494.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2024-40494","description":"Buffer Overflow in coap_msg.c in FreeCoAP allows remote attackers to execute arbitrary code or cause a denial of service (stack buffer overflow) via a crafted packet.","status":"published","published":"2024-10-22T00:00:00Z","modified":"2024-10-23T16:51:39.495Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:34:07.152829Z"}],"euvd":[{"id":"EUVD-2024-38481","description":"Buffer Overflow in coap_msg.c in FreeCoAP allows remote attackers to execute arbitrary code or cause a denial of service (stack buffer overflow) via a crafted packet.","status":"published","published":"2024-10-22T00:00:00Z","modified":"2024-10-23T16:51:39Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T00:05:21.011532Z"}],"ghsa":[{"id":"GHSA-h9p7-c5rq-hwjj","title":"Buffer Overflow in coap_msg.c in FreeCoAP allows remote attackers to execute arbitrary code or...","description":"Buffer Overflow in coap_msg.c in FreeCoAP allows remote attackers to execute arbitrary code or cause a denial of service (stack buffer overflow) via a crafted packet.","status":"published","published":"2024-10-23T00:31:44Z","modified":"2024-10-23T18:34:12Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:58:35.380011Z"}],"nvd":[{"id":"CVE-2024-40494","description":"Buffer Overflow in coap_msg.c in FreeCoAP allows remote attackers to execute arbitrary code or cause a denial of service (stack buffer overflow) via a crafted packet.","status":"published","published":"2024-10-22T22:15:04.493Z","modified":"2026-06-17T07:45:58.693Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-120"],"updated_at":"2026-11-02T14:10:33.928543Z"}],"osv":[{"id":"CVE-2024-40494","description":"Buffer Overflow in coap_msg.c in FreeCoAP allows remote attackers to execute arbitrary code or cause a denial of service (stack buffer overflow) via a crafted packet.","status":"published","published":"2024-10-22T00:00:00Z","modified":"2026-10-28T02:30:26.484449439Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:41.618074Z"}]}}