CVE-2018-1028: Microsoft Excel Services

High severity, CVSS 8.8. EPSS: 18.9% chance of exploitation in the next 30 days.

A remote code execution vulnerability exists when the Office graphics component improperly handles specially crafted embedded fonts, aka "Microsoft Office Graphics Remote Code Execution Vulnerability." This affects Word, Microsoft Office, Microsoft SharePoint, Excel, Microsoft SharePoint Server.

Affected products

• Microsoft Excel Services: affected versions not specified
• Microsoft Office: version 2013 only; version 2013_rt only; version 2016 only
• Microsoft Office 2010: any version
• Microsoft Office Web Apps: version 2010 only; version 2013 only
• Microsoft SharePoint Enterprise Server: version 2013 only; version 2016 only
• Microsoft Word Automation Services: affected versions not specified

Published 2018-04-12. Last modified 2026-06-17.