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Vulnerability record · CVE-2018-8582 · published 14 November 2018

CVE-2018-8582: Microsoft office 365 proplus vulnerability

Microsoft · Office 365 Proplus

A remote code execution vulnerability exists in the way that Microsoft Outlook parses specially modified rule export files, aka "Microsoft Outlook Remote Code Execution Vulnerability." This affects Office 365 ProPlus, Microsoft Office, Microsoft Outlook. This CVE ID is unique from CVE-2018-8522, CVE-2018-8524, CVE-2018-8576.

8.8 CVSS 3.0 High EPSS 19% · top 2.8%
8.8CVSS 3.0 base score, v2 9.3
19%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

A remote code execution vulnerability exists in the way that Microsoft Outlook parses specially modified rule export files, aka "Microsoft Outlook Remote Code Execution Vulnerability." This affects Office 365 ProPlus, Microsoft Office, Microsoft Outlook. This CVE ID is unique from CVE-2018-8522, CVE-2018-8524, CVE-2018-8576.

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/105825 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1042110 Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8582 PatchVendor Advisory
http://www.securityfocus.com/bid/105825 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1042110 Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8582 PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-8582), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.