{"id":"CVE-2020-20276","details":"An unauthenticated stack-based buffer overflow vulnerability in common.c's handle_PORT in uftpd FTP server versions 2.10 and earlier can be abused to cause a crash and could potentially lead to remote code execution.","modified":"2026-07-08T12:44:27.873943Z","published":"2020-12-18T19:15:14.047Z","references":[{"type":"ADVISORY","url":"https://arinerron.com/blog/posts/6"},{"type":"FIX","url":"https://github.com/troglobit/uftpd/commit/0fb2c031ce0ace07cc19cd2cb2143c4b5a63c9dd"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/troglobit/uftpd","events":[{"introduced":"0"},{"last_affected":"e82248683ed7d53be1e01526f7b2a53dde545ef9"},{"fixed":"0fb2c031ce0ace07cc19cd2cb2143c4b5a63c9dd"}],"database_specific":{"cpe":"cpe:2.3:a:troglobit:uftpd:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"2.10"}],"source":["CPE_RANGE","REFERENCES"]}}],"versions":["v2.10","v2.9","v2.8","v2.7","v2.6","v2.5","v1.8","v1.7","v1.6","v1.5","v1.4","v1.3","v1.2","v1.1","v1.0","v0.1"],"database_specific":{"vanir_signatures_modified":"2026-07-08T12:44:27Z","vanir_signatures":[{"id":"CVE-2020-20276-a2bfc361","signature_type":"Line","signature_version":"v1","source":"https://github.com/troglobit/uftpd/commit/0fb2c031ce0ace07cc19cd2cb2143c4b5a63c9dd","target":{"file":"src/ftpcmd.c"},"deprecated":false,"digest":{"line_hashes":["305627866150381828683865241657895014322","12937131316666879073544403319990601086","173866264394877993175631420443797992491","250823014807152732547613692800473923267"],"threshold":0.9}},{"deprecated":false,"digest":{"function_hash":"73284893654735530245356761491877463198","length":898},"id":"CVE-2020-20276-d12c122b","signature_type":"Function","signature_version":"v1","source":"https://github.com/troglobit/uftpd/commit/0fb2c031ce0ace07cc19cd2cb2143c4b5a63c9dd","target":{"file":"src/ftpcmd.c","function":"handle_PORT"}}],"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-20276.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}