{"id":"CVE-2001-0660","aliases":["EUVD-2001-0646","GHSA-pqp4-m4cg-2cqf"],"status":"published","title":"Outlook Web Access (OWA) in Microsoft Exchange 5.5, SP4 and earlier, allows remote attackers to...","description":"Outlook Web Access (OWA) in Microsoft Exchange 5.5, SP4 and earlier, allows remote attackers to identify valid user email addresses by directly accessing a back-end function that processes the global address list (GAL).","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.2199,"percentile":0.97675,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2001-10-30T05:00:00Z","modified":"2026-06-16T21:54:42Z","products":[{"vendor":"microsoft","product":"exchange_server"}],"references":[{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2001/ms01-047","tags":["vendor-advisory","x_refsource_MS","x_transferred"]},{"url":"http://www.securityfocus.com/bid/3301","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://support.microsoft.com/support/kb/articles/Q307/1/95.ASP","tags":["vendor-advisory","x_refsource_MSKB","x_transferred","Patch","Vendor Advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/7089","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2001-0660"},{"url":"https://github.com/advisories/GHSA-pqp4-m4cg-2cqf"}],"sources":{"cve":[{"id":"CVE-2001-0660","description":"Outlook Web Access (OWA) in Microsoft Exchange 5.5, SP4 and earlier, allows remote attackers to identify valid user email addresses by directly accessing a back-end function that processes the global address list (GAL).","status":"published","published":"2002-03-09T05:00:00Z","modified":"2024-08-08T04:30:06.064Z","updated_at":"2026-11-02T14:34:43.032065Z"}],"euvd":[{"id":"EUVD-2001-0646","description":"Outlook Web Access (OWA) in Microsoft Exchange 5.5, SP4 and earlier, allows remote attackers to identify valid user email addresses by directly accessing a back-end function that processes the global address list (GAL).","status":"published","published":"2002-03-09T05:00:00Z","modified":"2024-08-08T04:30:06Z","updated_at":"2026-11-03T01:14:50.641084Z"}],"ghsa":[{"id":"GHSA-pqp4-m4cg-2cqf","title":"Outlook Web Access (OWA) in Microsoft Exchange 5.5, SP4 and earlier, allows remote attackers to...","description":"Outlook Web Access (OWA) in Microsoft Exchange 5.5, SP4 and earlier, allows remote attackers to identify valid user email addresses by directly accessing a back-end function that processes the global address list (GAL).","status":"published","published":"2022-04-30T18:16:29Z","modified":"2023-01-30T05:05:34Z","updated_at":"2026-11-02T14:47:18.26887Z"}],"nvd":[{"id":"CVE-2001-0660","description":"Outlook Web Access (OWA) in Microsoft Exchange 5.5, SP4 and earlier, allows remote attackers to identify valid user email addresses by directly accessing a back-end function that processes the global address list (GAL).","status":"published","published":"2001-10-30T05:00:00Z","modified":"2026-06-16T21:54:42.403Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:00:40.572315Z"}]}}