{"id":"CVE-2000-0408","aliases":["EUVD-2000-0407","GHSA-wx3j-8h4r-qj57"],"status":"published","title":"IIS 4.05 and 5.0 allow remote attackers to cause a denial of service via a long, complex URL that...","description":"IIS 4.05 and 5.0 allow remote attackers to cause a denial of service via a long, complex URL that appears to contain a large number of file extensions, aka the \"Malformed Extension Data in URL\" 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":"2026-11-08","score":0.57964,"percentile":0.99092,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"2000-05-11T04:00:00Z","modified":"2026-06-16T21:51:39Z","exploits":[{"source":"exploitdb","id":"EDB-19907","title":"Microsoft IIS 4.0/5.0 - Malformed File Extension Denial of Service","type":"dos","platform":"windows","date":"2000-05-11","verified":true,"url":"https://www.exploit-db.com/exploits/19907"}],"products":[{"vendor":"microsoft","product":"internet_information_server"},{"vendor":"microsoft","product":"internet_information_services"}],"references":[{"url":"http://www.securityfocus.com/bid/1190","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://www.microsoft.com/technet/support/kb.asp?ID=260205","tags":["vendor-advisory","x_refsource_MSKB","x_transferred"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-030","tags":["vendor-advisory","x_refsource_MS","x_transferred"]},{"url":"http://www.ussrback.com/labs40.html","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2000-0408"},{"url":"https://github.com/advisories/GHSA-wx3j-8h4r-qj57"}],"sources":{"cve":[{"id":"CVE-2000-0408","description":"IIS 4.05 and 5.0 allow remote attackers to cause a denial of service via a long, complex URL that appears to contain a large number of file extensions, aka the \"Malformed Extension Data in URL\" vulnerability.","status":"published","published":"2000-07-12T04:00:00Z","modified":"2024-08-08T05:14:21.52Z","updated_at":"2026-11-02T14:33:41.23606Z"}],"euvd":[{"id":"EUVD-2000-0407","description":"IIS 4.05 and 5.0 allow remote attackers to cause a denial of service via a long, complex URL that appears to contain a large number of file extensions, aka the \"Malformed Extension Data in URL\" vulnerability.","status":"published","published":"2000-07-12T04:00:00Z","modified":"2024-08-08T05:14:21Z","updated_at":"2026-11-03T00:56:25.511445Z"}],"ghsa":[{"id":"GHSA-wx3j-8h4r-qj57","title":"IIS 4.05 and 5.0 allow remote attackers to cause a denial of service via a long, complex URL that...","description":"IIS 4.05 and 5.0 allow remote attackers to cause a denial of service via a long, complex URL that appears to contain a large number of file extensions, aka the \"Malformed Extension Data in URL\" vulnerability.","status":"published","published":"2022-04-30T18:13:34Z","modified":"2023-01-30T05:04:59Z","updated_at":"2026-11-02T14:47:10.094761Z"}],"nvd":[{"id":"CVE-2000-0408","description":"IIS 4.05 and 5.0 allow remote attackers to cause a denial of service via a long, complex URL that appears to contain a large number of file extensions, aka the \"Malformed Extension Data in URL\" vulnerability.","status":"published","published":"2000-05-11T04:00:00Z","modified":"2026-06-16T21:51:39.22Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T13:58:51.654586Z"}]}}