{"id":"CVE-1999-1538","aliases":["EUVD-1999-1519","GHSA-9cm9-h986-74j4"],"status":"published","title":"When IIS 2 or 3 is upgraded to IIS 4, ism.dll is inadvertently left in /scripts/iisadmin, which...","description":"When IIS 2 or 3 is upgraded to IIS 4, ism.dll is inadvertently left in /scripts/iisadmin, which does not restrict access to the local machine and allows an unauthorized user to gain access to sensitive server information, including the Administrator's password.","severity":{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.25267,"percentile":0.97952,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"published":"1999-01-14T05:00:00Z","modified":"2026-06-16T21:50:40Z","exploits":[{"source":"exploitdb","id":"EDB-19147","title":"Microsoft IIS 4 (Windows NT) - Remote Web-Based Administration","type":"remote","platform":"windows","date":"1999-01-14","verified":true,"url":"https://www.exploit-db.com/exploits/19147"}],"products":[{"vendor":"microsoft","product":"internet_information_server"}],"references":[{"url":"http://marc.info/?l=bugtraq\u0026m=91638375309890\u0026w=2","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"http://marc.info/?l=ntbugtraq\u0026m=91632724913080\u0026w=2","tags":["mailing-list","x_refsource_NTBUGTRAQ","x_transferred"]},{"url":"http://www.securityfocus.com/bid/189","tags":["vdb-entry","x_refsource_BID","x_transferred","Exploit"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-1999-1538"},{"url":"https://github.com/advisories/GHSA-9cm9-h986-74j4"}],"sources":{"cve":[{"id":"CVE-1999-1538","description":"When IIS 2 or 3 is upgraded to IIS 4, ism.dll is inadvertently left in /scripts/iisadmin, which does not restrict access to the local machine and allows an unauthorized user to gain access to sensitive server information, including the Administrator's password.","status":"published","published":"2001-09-12T04:00:00Z","modified":"2024-08-01T17:18:07.511Z","updated_at":"2026-11-02T14:33:53.295018Z"}],"euvd":[{"id":"EUVD-1999-1519","description":"When IIS 2 or 3 is upgraded to IIS 4, ism.dll is inadvertently left in /scripts/iisadmin, which does not restrict access to the local machine and allows an unauthorized user to gain access to sensitive server information, including the Administrator's password.","status":"published","published":"2001-09-12T04:00:00Z","modified":"2024-08-01T17:18:07Z","updated_at":"2026-11-03T03:50:41.965248Z"}],"ghsa":[{"id":"GHSA-9cm9-h986-74j4","title":"When IIS 2 or 3 is upgraded to IIS 4, ism.dll is inadvertently left in /scripts/iisadmin, which...","description":"When IIS 2 or 3 is upgraded to IIS 4, ism.dll is inadvertently left in /scripts/iisadmin, which does not restrict access to the local machine and allows an unauthorized user to gain access to sensitive server information, including the Administrator's password.","status":"published","published":"2022-04-30T18:12:39Z","modified":"2023-01-30T05:04:38Z","updated_at":"2026-11-02T14:47:05.478485Z"}],"nvd":[{"id":"CVE-1999-1538","description":"When IIS 2 or 3 is upgraded to IIS 4, ism.dll is inadvertently left in /scripts/iisadmin, which does not restrict access to the local machine and allows an unauthorized user to gain access to sensitive server information, including the Administrator's password.","status":"published","published":"1999-01-14T05:00:00Z","modified":"2026-06-16T21:50:40.317Z","cvss":[{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary"}],"updated_at":"2026-11-02T13:58:30.236077Z"}]}}