{"id":"CVE-2019-0858","aliases":["EUVD-2019-1609","GHSA-q2p4-2448-29qg"],"status":"published","title":"A spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web Access (OWA) fails...","description":"A spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web Access (OWA) fails to properly handle web requests, aka 'Microsoft Exchange Spoofing Vulnerability'. This CVE ID is unique from CVE-2019-0817.","severity":{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.02103,"percentile":0.81862,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2019-04-09T20:19:48Z","modified":"2026-06-17T02:09:03Z","products":[{"vendor":"microsoft","product":"exchange_server"},{"vendor":"microsoft","product":"microsoft exchange server"},{"vendor":"microsoft","product":"microsoft exchange server 2013"},{"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-2019-0858","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-0858"},{"url":"https://github.com/advisories/GHSA-q2p4-2448-29qg"}],"sources":{"cve":[{"id":"CVE-2019-0858","description":"A spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web Access (OWA) fails to properly handle web requests, aka 'Microsoft Exchange Spoofing Vulnerability'. This CVE ID is unique from CVE-2019-0817.","status":"published","published":"2019-04-09T20:19:48Z","modified":"2024-08-04T17:58:59.835Z","updated_at":"2026-11-02T14:32:24.473448Z"}],"euvd":[{"id":"EUVD-2019-1609","description":"A spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web Access (OWA) fails to properly handle web requests, aka 'Microsoft Exchange Spoofing Vulnerability'. This CVE ID is unique from CVE-2019-0817.","status":"published","published":"2019-04-09T20:19:48Z","modified":"2024-08-04T17:58:59Z","updated_at":"2026-11-03T03:07:00.044721Z"}],"ghsa":[{"id":"GHSA-q2p4-2448-29qg","title":"A spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web Access (OWA) fails...","description":"A spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web Access (OWA) fails to properly handle web requests, aka 'Microsoft Exchange Spoofing Vulnerability'. This CVE ID is unique from CVE-2019-0817.","status":"published","published":"2022-05-13T01:21:41Z","modified":"2023-02-01T05:06:21Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:50:20.778256Z"}],"nvd":[{"id":"CVE-2019-0858","description":"A spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web Access (OWA) fails to properly handle web requests, aka 'Microsoft Exchange Spoofing Vulnerability'. This CVE ID is unique from CVE-2019-0817.","status":"published","published":"2019-04-09T21:29:02.473Z","modified":"2026-06-17T02:09:03.2Z","cvss":[{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:05:11.426883Z"}]}}