CVE-2018-8539: Microsoft Office

High severity, CVSS 7.8. EPSS: 19.1% chance of exploitation in the next 30 days.

A remote code execution vulnerability exists in Microsoft Word software when it fails to properly handle objects in memory, aka "Microsoft Word Remote Code Execution Vulnerability." This affects Microsoft SharePoint Server, Microsoft Office. This CVE ID is unique from CVE-2018-8573.

Affected products

• Microsoft Office: version 2010 only
• Microsoft Office Web Apps: version 2010 only
• Microsoft SharePoint Server: version 2010 only

Published 2018-11-14. Last modified 2026-06-17.