{"id":"CVE-2020-20276","url":"https://www.cyber-defence.io/tools/cve/CVE-2020-20276","generatedAt":"2026-10-27T22:32:37.354Z","title":"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.","description":"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.","published":"2020-12-18T19:15:14.000Z","lastModified":"2026-06-17T03:02:56.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-787"],"affected":["troglobit/uftpd"],"epss":{"score":0.03432,"percentile":0.88861,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (3.43%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://arinerron.com/blog/posts/6","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/troglobit/uftpd/commit/0fb2c031ce0ace07cc19cd2cb2143c4b5a63c9dd","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://arinerron.com/blog/posts/6","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/troglobit/uftpd/commit/0fb2c031ce0ace07cc19cd2cb2143c4b5a63c9dd","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-20276","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}