CVE-2021-34518: Microsoft Excel

High severity, CVSS 7.8. EPSS: 2.4% chance of exploitation in the next 30 days.

Microsoft Excel Remote Code Execution Vulnerability

Affected products

• Microsoft Excel: version 2013 only; version 2016 only
• Microsoft Office Web Apps Server: version 2013 only

Published 2021-07-14. Last modified 2026-08-10.