{"id":"CVE-2000-0457","aliases":["EUVD-2000-0456","GHSA-w5j6-fmxr-5fr8"],"status":"published","title":"ISM.DLL in IIS 4.0 and 5.0 allows remote attackers to read file contents by requesting the file...","description":"ISM.DLL in IIS 4.0 and 5.0 allows remote attackers to read file contents by requesting the file and appending a large number of encoded spaces (%20) and terminated with a .htr extension, aka the \".HTR File Fragment Reading\" or \"File Fragment Reading via .HTR\" vulnerability.","severity":{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.52751,"percentile":0.98978,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"2000-05-11T04:00:00Z","modified":"2026-06-16T21:51:46Z","exploits":[{"source":"exploitdb","id":"EDB-19908","title":"Microsoft IIS 4.0/5.0 - Malformed Filename Request","type":"remote","platform":"windows","date":"2000-05-11","verified":true,"url":"https://www.exploit-db.com/exploits/19908"}],"products":[{"vendor":"microsoft","product":"internet_information_server"},{"vendor":"microsoft","product":"internet_information_services"}],"references":[{"url":"http://marc.info/?l=bugtraq\u0026m=95810120719608\u0026w=2","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2000/ms00-031","tags":["vendor-advisory","x_refsource_MS","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/4448","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.securityfocus.com/bid/1193","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2000-0457"},{"url":"https://github.com/advisories/GHSA-w5j6-fmxr-5fr8"}],"sources":{"cve":[{"id":"CVE-2000-0457","description":"ISM.DLL in IIS 4.0 and 5.0 allows remote attackers to read file contents by requesting the file and appending a large number of encoded spaces (%20) and terminated with a .htr extension, aka the \".HTR File Fragment Reading\" or \"File Fragment Reading via .HTR\" vulnerability.","status":"published","published":"2002-03-09T05:00:00Z","modified":"2024-08-08T05:21:29.949Z","updated_at":"2026-11-02T14:33:41.23606Z"}],"euvd":[{"id":"EUVD-2000-0456","description":"ISM.DLL in IIS 4.0 and 5.0 allows remote attackers to read file contents by requesting the file and appending a large number of encoded spaces (%20) and terminated with a .htr extension, aka the \".HTR File Fragment Reading\" or \"File Fragment Reading via .HTR\" vulnerability.","status":"published","published":"2002-03-09T05:00:00Z","modified":"2024-08-08T05:21:29Z","updated_at":"2026-11-03T00:56:25.069165Z"}],"ghsa":[{"id":"GHSA-w5j6-fmxr-5fr8","title":"ISM.DLL in IIS 4.0 and 5.0 allows remote attackers to read file contents by requesting the file...","description":"ISM.DLL in IIS 4.0 and 5.0 allows remote attackers to read file contents by requesting the file and appending a large number of encoded spaces (%20) and terminated with a .htr extension, aka the \".HTR File Fragment Reading\" or \"File Fragment Reading via .HTR\" vulnerability.","status":"published","published":"2022-04-30T18:13:41Z","modified":"2023-01-30T05:04:34Z","updated_at":"2026-11-02T14:47:04.563666Z"}],"nvd":[{"id":"CVE-2000-0457","description":"ISM.DLL in IIS 4.0 and 5.0 allows remote attackers to read file contents by requesting the file and appending a large number of encoded spaces (%20) and terminated with a .htr extension, aka the \".HTR File Fragment Reading\" or \"File Fragment Reading via .HTR\" vulnerability.","status":"published","published":"2000-05-11T04:00:00Z","modified":"2026-06-16T21:51:46.553Z","cvss":[{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T13:58:51.654586Z"}]}}