{"id":"CVE-2001-1021","url":"https://www.cyber-defence.io/tools/cve/CVE-2001-1021","generatedAt":"2026-10-27T18:32:01.129Z","title":"Buffer overflows in WS_FTP 2.02 allow remote attackers to execute arbitrary code via long arguments to (1) DELE, (2) MDTM, (3) MLST, (4) MKD, (5) RMD, (6) RNFR, (7) RNTO, (8) SIZE, (9) STAT, (10) XMKD, or (11) XRMD.","description":"Buffer overflows in WS_FTP 2.02 allow remote attackers to execute arbitrary code via long arguments to (1) DELE, (2) MDTM, (3) MLST, (4) MKD, (5) RMD, (6) RNFR, (7) RNTO, (8) SIZE, (9) STAT, (10) XMKD, or (11) XRMD.","published":"2001-07-26T04:00:00.000Z","lastModified":"2026-06-16T21:55:26.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"2.0","score":7.5,"severity":"HIGH","vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P"},"cwe":[],"affected":["progress/ws ftp server"],"epss":{"score":0.42141,"percentile":0.98686,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":2,"verified":true,"firstPublished":"2001-07-25","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":1158,"kind":"exploit","title":"Ipswitch WS_FTP Server 5.03 - 'RNFR' Buffer Overflow","url":"https://www.exploit-db.com/exploits/1158","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/dos/1158.pl","file":"exploits/windows/dos/1158.pl","published":"2004-11-29","added":"2004-11-28","updated":"2016-09-27","author":"Reed Arvin","type":"dos","platform":"windows","port":null,"verified":true,"codes":["OSVDB-14115","CVE-2001-1021"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null},{"edbId":21036,"kind":"exploit","title":"Ipswitch WS_FTP Server 2.0 - Anonymous Multiple FTP Command Buffer Overflows","url":"https://www.exploit-db.com/exploits/21036","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/remote/21036.pl","file":"exploits/windows/remote/21036.pl","published":"2001-07-25","added":"2001-07-25","updated":"2016-10-27","author":"andreas","type":"remote","platform":"windows","port":null,"verified":true,"codes":["CVE-2001-1021","OSVDB-14115"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"https://www.securityfocus.com/bid/3102/info"}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 42.1%, higher than 99% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://archives.neohapsis.com/archives/bugtraq/2001-07/0610.html","tags":["Exploit","Patch","Vendor Advisory"],"source":"cve@mitre.org"},{"url":"http://www.ipswitch.com/Support/WS_FTP-Server/patch-upgrades.html","tags":["Patch"],"source":"cve@mitre.org"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/6911","source":"cve@mitre.org"},{"url":"http://archives.neohapsis.com/archives/bugtraq/2001-07/0610.html","tags":["Exploit","Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.ipswitch.com/Support/WS_FTP-Server/patch-upgrades.html","tags":["Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/6911","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2001-1021","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."}