{"id":"CVE-2018-8558","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-8558","generatedAt":"2026-10-28T23:38:08.728Z","title":"An information disclosure vulnerability exists when Microsoft Outlook fails to respect \"Default link type\" settings configured via the SharePoint Online Admin Center, aka \"Microsoft Outlook Information Disclosure Vulnerability.\" This affects Office 365…","description":"An information disclosure vulnerability exists when Microsoft Outlook fails to respect \"Default link type\" settings configured via the SharePoint Online Admin Center, aka \"Microsoft Outlook Information Disclosure Vulnerability.\" This affects Office 365 ProPlus, Microsoft Office. This CVE ID is unique from CVE-2018-8579.","published":"2018-11-14T01:29:01.000Z","lastModified":"2026-06-17T02:05:06.000Z","status":"Modified","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"3.0","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-200"],"affected":["microsoft/office","microsoft/office 365 proplus"],"epss":{"score":0.05585,"percentile":0.92848,"date":"2026-10-27","history":[]},"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 (5.58%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://www.securityfocus.com/bid/105826","tags":["Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8558","tags":["Patch","Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"http://www.securityfocus.com/bid/105826","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8558","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-8558","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."}