CVE-2017-11878: Microsoft Excel

High severity, CVSS 7.8. EPSS: 6.2% chance of exploitation in the next 30 days.

Microsoft Excel 2007 Service Pack 3, Microsoft Excel 2010 Service Pack 2, Microsoft Excel 2013 Service Pack 1, Microsoft Excel 2013 RT Service Pack 1, Microsoft Excel 2016, Microsoft Office Compatibility Pack Service Pack 3, and Microsoft Excel Viewer 2007 Service Pack 3 allow an attacker to run arbitrary code in the context of the current user by failing to properly handle objects in memory, aka "Microsoft Excel Memory Corruption Vulnerability".

Affected products

• Microsoft Excel: version 2007 only; version 2010 only; version 2013 only; version 2016 only
• Microsoft Excel Viewer: version 2007 only
• Microsoft Office Compatibility Pack: affected versions not specified

Published 2017-11-15. Last modified 2026-06-17.