CVE-2018-8597: Microsoft Excel

High severity, CVSS 7.8. EPSS: 16.1% 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 memory, aka "Microsoft Excel Remote Code Execution Vulnerability." This affects Office 365 ProPlus, Microsoft Office, Microsoft Excel. This CVE ID is unique from CVE-2018-8636.

Affected products

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

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