CVE-2016-7266: Microsoft Excel

High severity, CVSS 7.8. EPSS: 22.2% chance of exploitation in the next 30 days.

Microsoft Excel 2007 SP3, Excel 2010 SP2, Excel 2013 SP1, Excel 2013 RT SP1, Excel 2016, Office Compatibility Pack SP3, Excel Viewer, and Excel 2016 for Mac mishandle a registry check, which allows user-assisted remote attackers to execute arbitrary commands via crafted embedded content in a document, aka "Microsoft Office Security Feature Bypass Vulnerability."

Affected products

• Microsoft Excel: version 2007 only; version 2010 only; version 2013 only; version 2016 only
• Microsoft Excel For Mac: version 2016 only
• Microsoft Excel Viewer: any version
• Microsoft Office Compatibility Pack: any version

Published 2016-12-20. Last modified 2026-06-17.