{"id":"CVE-2018-8378","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-8378","generatedAt":"2026-10-28T21:19:41.657Z","title":"An information disclosure vulnerability exists when Microsoft Office software reads out of bound memory due to an uninitialized variable, which could disclose the contents of memory, aka \"Microsoft Office Information Disclosure Vulnerability.\" This…","description":"An information disclosure vulnerability exists when Microsoft Office software reads out of bound memory due to an uninitialized variable, which could disclose the contents of memory, aka \"Microsoft Office Information Disclosure Vulnerability.\" This affects Word, Microsoft SharePoint Server, Microsoft Office Word Viewer, Microsoft Excel Viewer, Microsoft SharePoint, Microsoft Office.","published":"2018-08-15T17:29:07.000Z","lastModified":"2026-06-17T02:04:44.000Z","status":"Modified","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"3.0","score":5.5,"severity":"MEDIUM","vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"},"cwe":["CWE-125","CWE-908"],"affected":["microsoft/excel viewer","microsoft/office","microsoft/office compatibility pack","microsoft/office web apps","microsoft/office word viewer","microsoft/sharepoint enterprise server 2013","microsoft/sharepoint enterprise server 2016","microsoft/sharepoint server","microsoft/word automation services"],"epss":{"score":0.07306,"percentile":0.94344,"date":"2026-10-27","history":[{"date":"2026-09-21","score":0.0572,"percentile":0.92742},{"date":"2026-09-22","score":0.08247,"percentile":0.94646},{"date":"2026-10-12","score":0.06849,"percentile":0.93899}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (7.31%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://www.securityfocus.com/bid/104996","tags":["Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8378","tags":["Patch","Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"http://www.securityfocus.com/bid/104996","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8378","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-8378","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}