{"id":"CVE-2019-1084","aliases":["EUVD-2019-9665","GHSA-r2c7-qvrq-pwg6"],"status":"published","title":"An information disclosure vulnerability exists when Exchange allows creation of entities with...","description":"An information disclosure vulnerability exists when Exchange allows creation of entities with Display Names having non-printable characters. An authenticated attacker could exploit this vulnerability by creating entities with invalid display names, which, when added to conversations, remain invisible. This security update addresses the issue by validating display names upon creation in Microsoft Exchange, and by rendering invalid display names correctly in Microsoft Outlook clients., aka 'Microsoft Exchange Information Disclosure Vulnerability'.","severity":{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.05328,"percentile":0.9267,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-200"],"published":"2019-07-15T18:56:21Z","modified":"2026-06-17T02:27:47Z","products":[{"vendor":"microsoft","product":"exchange_server"},{"vendor":"microsoft","product":"lync"},{"vendor":"microsoft","product":"lync_basic"},{"vendor":"microsoft","product":"mail and calendar"},{"vendor":"microsoft","product":"mail_and_calendar"},{"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"},{"vendor":"microsoft","product":"microsoft lync"},{"vendor":"microsoft","product":"microsoft lync basic"},{"vendor":"microsoft","product":"microsoft office"},{"vendor":"microsoft","product":"microsoft outlook"},{"vendor":"microsoft","product":"microsoft outlook for android"},{"vendor":"microsoft","product":"office"},{"vendor":"microsoft","product":"office 365 proplus"},{"vendor":"microsoft","product":"office_365_proplus"},{"vendor":"microsoft","product":"outlook"},{"vendor":"microsoft","product":"outlook for ios"},{"vendor":"microsoft","product":"skype for business"},{"vendor":"microsoft","product":"skype for business basic"},{"vendor":"microsoft","product":"skype_for_business"},{"vendor":"microsoft","product":"skype_for_business_basic"},{"vendor":"microsoft corporation","product":"microsoft outlook"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1084","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-1084"},{"url":"https://github.com/advisories/GHSA-r2c7-qvrq-pwg6"}],"sources":{"cve":[{"id":"CVE-2019-1084","description":"An information disclosure vulnerability exists when Exchange allows creation of entities with Display Names having non-printable characters. An authenticated attacker could exploit this vulnerability by creating entities with invalid display names, which, when added to conversations, remain invisible. This security update addresses the issue by validating display names upon creation in Microsoft Exchange, and by rendering invalid display names correctly in Microsoft Outlook clients., aka 'Microsoft Exchange Information Disclosure Vulnerability'.","status":"published","published":"2019-07-15T18:56:21Z","modified":"2024-08-04T18:06:31.581Z","updated_at":"2026-11-02T14:20:25.303966Z"}],"euvd":[{"id":"EUVD-2019-9665","description":"An information disclosure vulnerability exists when Exchange allows creation of entities with Display Names having non-printable characters. An authenticated attacker could exploit this vulnerability by creating entities with invalid display names, which, when added to conversations, remain invisible. This security update addresses the issue by validating display names upon creation in Microsoft Exchange, and by rendering invalid display names correctly in Microsoft Outlook clients., aka 'Microsoft Exchange Information Disclosure Vulnerability'.","status":"published","published":"2019-07-15T18:56:21Z","modified":"2024-08-04T18:06:31Z","updated_at":"2026-11-03T03:06:59.435978Z"}],"ghsa":[{"id":"GHSA-r2c7-qvrq-pwg6","title":"An information disclosure vulnerability exists when Exchange allows creation of entities with...","description":"An information disclosure vulnerability exists when Exchange allows creation of entities with Display Names having non-printable characters. An authenticated attacker could exploit this vulnerability by creating entities with invalid display names, which, when added to conversations, remain invisible. This security update addresses the issue by validating display names upon creation in Microsoft Exchange, and by rendering invalid display names correctly in Microsoft Outlook clients., aka 'Microsoft Exchange Information Disclosure Vulnerability'.","status":"published","published":"2022-05-24T16:50:20Z","modified":"2023-01-28T05:06:05Z","updated_at":"2026-11-02T14:44:24.376453Z"}],"nvd":[{"id":"CVE-2019-1084","description":"An information disclosure vulnerability exists when Exchange allows creation of entities with Display Names having non-printable characters. An authenticated attacker could exploit this vulnerability by creating entities with invalid display names, which, when added to conversations, remain invisible. This security update addresses the issue by validating display names upon creation in Microsoft Exchange, and by rendering invalid display names correctly in Microsoft Outlook clients., aka 'Microsoft Exchange Information Disclosure Vulnerability'.","status":"published","published":"2019-07-15T19:15:17.873Z","modified":"2026-06-17T02:27:47.567Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:05:19.195714Z"}]}}