{"id":"CVE-2019-1233","aliases":["EUVD-2019-9800","GHSA-4q39-66fh-68hr"],"status":"published","title":"A denial of service vulnerability exists in Microsoft Exchange Server software when the software...","description":"A denial of service vulnerability exists in Microsoft Exchange Server software when the software fails to properly handle objects in memory, aka 'Microsoft Exchange Denial of Service Vulnerability'.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.06176,"percentile":0.9355,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2019-09-11T21:24:58Z","modified":"2026-06-17T02:28:11Z","products":[{"vendor":"microsoft","product":"exchange_server"},{"vendor":"microsoft","product":"microsoft exchange server 2016"},{"vendor":"microsoft","product":"microsoft exchange server 2019"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1233","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-1233"},{"url":"https://github.com/advisories/GHSA-4q39-66fh-68hr"}],"sources":{"cve":[{"id":"CVE-2019-1233","description":"A denial of service vulnerability exists in Microsoft Exchange Server software when the software fails to properly handle objects in memory, aka 'Microsoft Exchange Denial of Service Vulnerability'.","status":"published","published":"2019-09-11T21:24:58Z","modified":"2024-08-04T18:13:29.652Z","updated_at":"2026-11-02T14:20:26.034547Z"}],"euvd":[{"id":"EUVD-2019-9800","description":"A denial of service vulnerability exists in Microsoft Exchange Server software when the software fails to properly handle objects in memory, aka 'Microsoft Exchange Denial of Service Vulnerability'.","status":"published","published":"2019-09-11T21:24:58Z","modified":"2024-08-04T18:13:29Z","updated_at":"2026-11-03T03:06:58.838317Z"}],"ghsa":[{"id":"GHSA-4q39-66fh-68hr","title":"A denial of service vulnerability exists in Microsoft Exchange Server software when the software...","description":"A denial of service vulnerability exists in Microsoft Exchange Server software when the software fails to properly handle objects in memory, aka 'Microsoft Exchange Denial of Service Vulnerability'.","status":"published","published":"2022-05-24T16:56:00Z","modified":"2023-01-28T05:06:45Z","updated_at":"2026-11-02T14:44:27.774415Z"}],"nvd":[{"id":"CVE-2019-1233","description":"A denial of service vulnerability exists in Microsoft Exchange Server software when the software fails to properly handle objects in memory, aka 'Microsoft Exchange Denial of Service Vulnerability'.","status":"published","published":"2019-09-11T22:15:15.163Z","modified":"2026-06-17T02:28:11.597Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:05:28.126831Z"}]}}