{"id":"CVE-2020-1493","aliases":["EUVD-2020-12367","GHSA-w39r-2vjm-hgjq"],"status":"published","title":"Microsoft Outlook Information Disclosure Vulnerability","description":"An information disclosure vulnerability exists when attaching files to Outlook messages. This vulnerability could potentially allow users to share attached files such that they are accessible by anonymous users where they should be restricted to specific users.\nTo exploit this vulnerability, an attacker would have to attach a file as a link to an email. The email could then be shared with individuals that should not have access to the files, ignoring the default organizational setting.\nThe security update addresses the vulnerability by correcting how Outlook handles file attachment links.","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.07296,"percentile":0.9441,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-200","CWE-922"],"published":"2020-08-17T00:00:00Z","modified":"2026-06-17T03:01:33Z","exploits":[{"source":"pocgithub","id":"0neb1n/CVE-2020-1493","title":"0neb1n/CVE-2020-1493","date":"2020-08-25","url":"https://github.com/0neb1n/CVE-2020-1493"}],"products":[{"vendor":"microsoft","product":"365_apps"},{"vendor":"microsoft","product":"microsoft 365 apps for enterprise"},{"vendor":"microsoft","product":"microsoft office 2019"},{"vendor":"microsoft","product":"microsoft outlook 2010 service pack 2"},{"vendor":"microsoft","product":"microsoft outlook 2013 service pack 1"},{"vendor":"microsoft","product":"microsoft outlook 2016"},{"vendor":"microsoft","product":"office"},{"vendor":"microsoft","product":"outlook"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1493","tags":["x_transferred","Patch","Vendor Advisory"]},{"url":"http://packetstormsecurity.com/files/169960/Microsoft-Outlook-2019-16.0.12624.20424-Out-Of-Bounds-Read.html","tags":["x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-1493"},{"url":"https://github.com/advisories/GHSA-w39r-2vjm-hgjq"}],"sources":{"cve":[{"id":"CVE-2020-1493","title":"Microsoft Outlook Information Disclosure Vulnerability","description":"An information disclosure vulnerability exists when attaching files to Outlook messages. This vulnerability could potentially allow users to share attached files such that they are accessible by anonymous users where they should be restricted to specific users.\nTo exploit this vulnerability, an attacker would have to attach a file as a link to an email. The email could then be shared with individuals that should not have access to the files, ignoring the default organizational setting.\nThe security update addresses the vulnerability by correcting how Outlook handles file attachment links.","status":"published","published":"2020-08-17T00:00:00Z","modified":"2024-08-04T06:39:10.465Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-922"],"updated_at":"2026-11-02T14:35:56.638833Z"}],"euvd":[{"id":"EUVD-2020-12367","description":"An information disclosure vulnerability exists when attaching files to Outlook messages. This vulnerability could potentially allow users to share attached files such that they are accessible by anonymous users where they should be restricted to specific users.\nTo exploit this vulnerability, an attacker would have to attach a file as a link to an email. The email could then be shared with individuals that should not have access to the files, ignoring the default organizational setting.\nThe security update addresses the vulnerability by correcting how Outlook handles file attachment links.","status":"published","published":"2020-08-17T00:00:00Z","modified":"2024-08-04T06:39:10Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T03:08:12.895997Z"}],"ghsa":[{"id":"GHSA-w39r-2vjm-hgjq","title":"An information disclosure vulnerability exists when attaching files to Outlook messages, aka ...","description":"An information disclosure vulnerability exists when attaching files to Outlook messages, aka 'Microsoft Outlook Information Disclosure Vulnerability'.","status":"published","published":"2022-05-24T17:25:49Z","modified":"2024-07-03T18:32:17Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-200","CWE-922"],"updated_at":"2026-11-02T14:57:33.266743Z"}],"nvd":[{"id":"CVE-2020-1493","description":"An information disclosure vulnerability exists when attaching files to Outlook messages. This vulnerability could potentially allow users to share attached files such that they are accessible by anonymous users where they should be restricted to specific users.\nTo exploit this vulnerability, an attacker would have to attach a file as a link to an email. The email could then be shared with individuals that should not have access to the files, ignoring the default organizational setting.\nThe security update addresses the vulnerability by correcting how Outlook handles file attachment links.","status":"published","published":"2020-08-17T19:15:16.21Z","modified":"2026-06-17T03:01:33.663Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-922"],"updated_at":"2026-11-02T14:06:13.05572Z"}]}}