{"id":"CVE-2018-8581","aliases":["EUVD-2018-20198","GHSA-h9jh-6fmr-vvc6"],"status":"published","title":"An elevation of privilege vulnerability exists in Microsoft Exchange Server, aka \"Microsoft...","description":"An elevation of privilege vulnerability exists in Microsoft Exchange Server, aka \"Microsoft Exchange Server Elevation of Privilege Vulnerability.\" This affects Microsoft Exchange Server.","severity":{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.27558,"percentile":0.98088,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":true,"fix_available":false},"published":"2018-11-14T01:00:00Z","modified":"2026-06-17T02:05:08Z","kev":{"date_added":"2022-03-03","due_date":"2022-03-17","required_action":"Apply updates per vendor instructions.","known_ransomware_use":"Known"},"exploitation":[{"source":"euvd","since":"2022-03-03"},{"source":"kev","since":"2022-03-03"}],"exploits":[{"source":"pocgithub","id":"WyAtu/CVE-2018-8581","title":"WyAtu/CVE-2018-8581","date":"2018-12-27","url":"https://github.com/WyAtu/CVE-2018-8581"},{"source":"pocgithub","id":"qiantu88/CVE-2018-8581","title":"qiantu88/CVE-2018-8581","date":"2018-12-28","url":"https://github.com/qiantu88/CVE-2018-8581"},{"source":"pocgithub","id":"Ridter/Exchange2domain","title":"Ridter/Exchange2domain","date":"2019-01-24","url":"https://github.com/Ridter/Exchange2domain"}],"products":[{"vendor":"microsoft","product":"exchange server"},{"vendor":"microsoft","product":"exchange_server"},{"vendor":"microsoft","product":"microsoft exchange server"}],"references":[{"url":"http://www.securitytracker.com/id/1042141","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","Broken Link","Third Party Advisory","VDB Entry"]},{"url":"http://www.securityfocus.com/bid/105837","tags":["vdb-entry","x_refsource_BID","x_transferred","Broken Link","Third Party Advisory","VDB Entry"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8581","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8581","tags":["government-resource","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-8581"},{"url":"https://github.com/advisories/GHSA-h9jh-6fmr-vvc6"}],"sources":{"cve":[{"id":"CVE-2018-8581","description":"An elevation of privilege vulnerability exists in Microsoft Exchange Server, aka \"Microsoft Exchange Server Elevation of Privilege Vulnerability.\" This affects Microsoft Exchange Server.","status":"published","published":"2018-11-14T01:00:00Z","modified":"2025-10-21T23:45:47.294Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"adp"}],"updated_at":"2026-11-02T14:35:04.540365Z"}],"euvd":[{"id":"EUVD-2018-20198","description":"An elevation of privilege vulnerability exists in Microsoft Exchange Server, aka \"Microsoft Exchange Server Elevation of Privilege Vulnerability.\" This affects Microsoft Exchange Server.","status":"published","published":"2018-11-14T01:00:00Z","modified":"2025-10-21T23:45:47Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"exploited_since":"2022-03-03","updated_at":"2026-11-02T20:31:24.172282Z"}],"ghsa":[{"id":"GHSA-h9jh-6fmr-vvc6","title":"An elevation of privilege vulnerability exists in Microsoft Exchange Server, aka \"Microsoft...","description":"An elevation of privilege vulnerability exists in Microsoft Exchange Server, aka \"Microsoft Exchange Server Elevation of Privilege Vulnerability.\" This affects Microsoft Exchange Server.","status":"published","published":"2022-05-13T01:27:26Z","modified":"2025-10-22T00:31:36Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:04:04.176931Z"}],"kev":[{"id":"CVE-2018-8581","title":"Microsoft Exchange Server Privilege Escalation Vulnerability","description":"A privilege escalation vulnerability exists in Microsoft Exchange Server. An attacker who successfully exploited this vulnerability could attempt to impersonate any other user of the Exchange server.","kev":{"date_added":"2022-03-03","due_date":"2022-03-17","required_action":"Apply updates per vendor instructions.","known_ransomware_use":"Known"},"updated_at":"2026-11-02T17:00:16.541131Z"}],"nvd":[{"id":"CVE-2018-8581","description":"An elevation of privilege vulnerability exists in Microsoft Exchange Server, aka \"Microsoft Exchange Server Elevation of Privilege Vulnerability.\" This affects Microsoft Exchange Server.","status":"published","published":"2018-11-14T01:29:01.927Z","modified":"2026-06-17T02:05:08.627Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"primary"},{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"},{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:04:47.196456Z"}]}}