CVE-2018-8502: Microsoft Excel

High severity, CVSS 8.8. EPSS: 20.5% chance of exploitation in the next 30 days.

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

Affected products

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

Published 2018-10-10. Last modified 2026-06-17.