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CVE-2018-8582

• Severity: high (CVSS 8.8 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 18.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-11-14 · updated 2026-06-17

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.

Affected products

• Microsoft Office 365 ProPlus: all versions
• Microsoft Outlook: 2010-sp2, 2013-sp1, 2016
• Microsoft Outlook Rt: 2013-sp1
• Microsoft Windows Server 2019: all versions
• Microsoft Office: 2019 for 32-bit editions, 2019 for 64-bit editions
• Microsoft Outlook: 2010 Service Pack 2 (32-bit editions), 2010 Service Pack 2 (64-bit editions), 2013 RT Service Pack 1, 2013 Service Pack 1 (32-bit editions), 2013 Service Pack 1 (64-bit editions), 2016 (32-bit edition) (+1)

References

• http://www.securityfocus.com/bid/105825
• http://www.securitytracker.com/id/1042110
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8582
• http://www.securityfocus.com/bid/105825
• http://www.securitytracker.com/id/1042110
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8582

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