{"id":"CVE-2018-8598","aliases":["EUVD-2018-20213","GHSA-643h-w2r6-x59x"],"status":"published","title":"An information disclosure vulnerability exists when Microsoft Excel improperly discloses the...","description":"An information disclosure vulnerability exists when Microsoft Excel improperly discloses the contents of its memory, aka \"Microsoft Excel Information Disclosure Vulnerability.\" This affects Office 365 ProPlus, Microsoft Office, Microsoft Excel. This CVE ID is unique from CVE-2018-8627.","severity":{"version":"3.0","score":4.7,"vector":"CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.06217,"percentile":0.93575,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2018-12-12T00:00:00Z","modified":"2026-06-17T02:05:10Z","products":[{"vendor":"microsoft","product":"excel"},{"vendor":"microsoft","product":"microsoft excel"},{"vendor":"microsoft","product":"microsoft office"},{"vendor":"microsoft","product":"office"},{"vendor":"microsoft","product":"office_365_proplus"}],"references":[{"url":"http://www.securityfocus.com/bid/106102","tags":["vdb-entry","x_refsource_BID","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8598","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-8598"},{"url":"https://github.com/advisories/GHSA-643h-w2r6-x59x"}],"sources":{"cve":[{"id":"CVE-2018-8598","description":"An information disclosure vulnerability exists when Microsoft Excel improperly discloses the contents of its memory, aka \"Microsoft Excel Information Disclosure Vulnerability.\" This affects Office 365 ProPlus, Microsoft Office, Microsoft Excel. This CVE ID is unique from CVE-2018-8627.","status":"published","published":"2018-12-12T00:00:00Z","modified":"2024-08-05T07:02:25.958Z","updated_at":"2026-11-02T14:35:04.540365Z"}],"euvd":[{"id":"EUVD-2018-20213","description":"An information disclosure vulnerability exists when Microsoft Excel improperly discloses the contents of its memory, aka \"Microsoft Excel Information Disclosure Vulnerability.\" This affects Office 365 ProPlus, Microsoft Office, Microsoft Excel. This CVE ID is unique from CVE-2018-8627.","status":"published","published":"2018-12-12T00:00:00Z","modified":"2024-08-05T07:02:25Z","updated_at":"2026-11-03T02:40:02.008103Z"}],"ghsa":[{"id":"GHSA-643h-w2r6-x59x","title":"An information disclosure vulnerability exists when Microsoft Excel improperly discloses the...","description":"An information disclosure vulnerability exists when Microsoft Excel improperly discloses the contents of its memory, aka \"Microsoft Excel Information Disclosure Vulnerability.\" This affects Office 365 ProPlus, Microsoft Office, Microsoft Excel. This CVE ID is unique from CVE-2018-8627.","status":"published","published":"2022-05-13T01:21:02Z","modified":"2023-02-01T05:06:36Z","cvss":[{"version":"3.0","score":4.7,"vector":"CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T14:50:22.895109Z"}],"nvd":[{"id":"CVE-2018-8598","description":"An information disclosure vulnerability exists when Microsoft Excel improperly discloses the contents of its memory, aka \"Microsoft Excel Information Disclosure Vulnerability.\" This affects Office 365 ProPlus, Microsoft Office, Microsoft Excel. This CVE ID is unique from CVE-2018-8627.","status":"published","published":"2018-12-12T00:29:00.793Z","modified":"2026-06-17T02:05:10.323Z","cvss":[{"version":"3.0","score":4.7,"vector":"CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":2.6,"vector":"AV:N/AC:H/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary"}],"updated_at":"2026-11-02T14:04:49.995593Z"}]}}