{"id":"CVE-2009-2521","aliases":["EUVD-2009-2516","GHSA-w8g4-h8cc-352m"],"status":"published","title":"Stack consumption vulnerability in the FTP Service in Microsoft Internet Information Services ...","description":"Stack consumption vulnerability in the FTP Service in Microsoft Internet Information Services (IIS) 5.0 through 7.0 allows remote authenticated users to cause a denial of service (daemon crash) via a list (ls) -R command containing a wildcard that references a subdirectory, followed by a .. (dot dot), aka \"IIS FTP Service DoS Vulnerability.\"","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.82265,"percentile":0.99662,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-400"],"published":"2009-09-04T10:00:00Z","modified":"2026-06-16T23:09:37Z","exploits":[{"source":"exploitdb","id":"EDB-17476","title":"Microsoft IIS 7.0 FTP Server - Stack Exhaustion Denial of Service (MS09-053) (Metasploit)","type":"dos","platform":"windows","date":"2011-07-03","url":"https://www.exploit-db.com/exploits/17476"},{"source":"exploitdb","id":"EDB-9587","title":"Microsoft IIS 5.0/6.0 FTP Server - Stack Exhaustion Denial of Service","type":"dos","platform":"windows","date":"2009-09-04","verified":true,"url":"https://www.exploit-db.com/exploits/9587"},{"source":"metasploit","id":"auxiliary/dos/windows/ftp/iis_list_exhaustion","title":"Microsoft IIS FTP Server LIST Stack Exhaustion","type":"auxiliary","date":"2009-09-03","verified":true,"url":"https://www.rapid7.com/db/modules/auxiliary/dos/windows/ftp/iis_list_exhaustion"}],"products":[{"vendor":"microsoft","product":"internet_information_services"}],"references":[{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6508","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred","Third Party Advisory"]},{"url":"http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ975191","tags":["vendor-advisory","x_refsource_MSKB","x_transferred"]},{"url":"http://www.us-cert.gov/cas/techalerts/TA09-286A.html","tags":["third-party-advisory","x_refsource_CERT","x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-053","tags":["vendor-advisory","x_refsource_MS","x_transferred","Patch","Vendor Advisory"]},{"url":"http://archives.neohapsis.com/archives/fulldisclosure/2009-09/0040.html","tags":["mailing-list","x_refsource_FULLDISC","x_transferred","Broken Link"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-2521"},{"url":"http://support.microsoft.com/default.aspx?scid=kb;[LN];Q975191"},{"url":"https://github.com/advisories/GHSA-w8g4-h8cc-352m"}],"sources":{"cve":[{"id":"CVE-2009-2521","description":"Stack consumption vulnerability in the FTP Service in Microsoft Internet Information Services (IIS) 5.0 through 7.0 allows remote authenticated users to cause a denial of service (daemon crash) via a list (ls) -R command containing a wildcard that references a subdirectory, followed by a .. (dot dot), aka \"IIS FTP Service DoS Vulnerability.\"","status":"published","published":"2009-09-04T10:00:00Z","modified":"2024-08-07T05:52:14.793Z","updated_at":"2026-11-02T14:33:23.749891Z"}],"euvd":[{"id":"EUVD-2009-2516","description":"Stack consumption vulnerability in the FTP Service in Microsoft Internet Information Services (IIS) 5.0 through 7.0 allows remote authenticated users to cause a denial of service (daemon crash) via a list (ls) -R command containing a wildcard that references a subdirectory, followed by a .. (dot dot), aka \"IIS FTP Service DoS Vulnerability.\"","status":"published","published":"2009-09-04T10:00:00Z","modified":"2024-08-07T05:52:14Z","updated_at":"2026-11-03T01:39:17.005545Z"}],"ghsa":[{"id":"GHSA-w8g4-h8cc-352m","title":"Stack consumption vulnerability in the FTP Service in Microsoft Internet Information Services ...","description":"Stack consumption vulnerability in the FTP Service in Microsoft Internet Information Services (IIS) 5.0 through 7.0 allows remote authenticated users to cause a denial of service (daemon crash) via a list (ls) -R command containing a wildcard that references a subdirectory, followed by a .. (dot dot), aka \"IIS FTP Service DoS Vulnerability.\"","status":"published","published":"2022-05-02T03:36:05Z","modified":"2025-04-09T04:13:52Z","cwes":["CWE-400"],"updated_at":"2026-11-02T15:01:00.53445Z"}],"nvd":[{"id":"CVE-2009-2521","description":"Stack consumption vulnerability in the FTP Service in Microsoft Internet Information Services (IIS) 5.0 through 7.0 allows remote authenticated users to cause a denial of service (daemon crash) via a list (ls) -R command containing a wildcard that references a subdirectory, followed by a .. (dot dot), aka \"IIS FTP Service DoS Vulnerability.\"","status":"published","published":"2009-09-04T10:30:01.907Z","modified":"2026-06-16T23:09:37.8Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:01:36.596719Z"}]}}