CVE-2018-8587: Microsoft Office

High severity, CVSS 7.8. EPSS: 28.8% chance of exploitation in the next 30 days.

A remote code execution vulnerability exists in Microsoft Outlook software when it fails to properly handle objects in memory, aka "Microsoft Outlook Remote Code Execution Vulnerability." This affects Office 365 ProPlus, Microsoft Office, Microsoft Outlook.

Affected products

• Microsoft Office: version 2010 only; version 2013 only; version 2016 only; version 2019 only
• Microsoft Office 365 Proplus: affected versions not specified

Published 2018-12-12. Last modified 2026-06-17.