CVE-2012-0185: Microsoft Excel

High severity, CVSS 9.3. EPSS: 24.6% chance of exploitation in the next 30 days.

Heap-based buffer overflow in Microsoft Excel 2007 SP2 and SP3 and 2010 Gold and SP1, Excel Viewer, and Office Compatibility Pack SP2 and SP3 allows remote attackers to execute arbitrary code via a crafted spreadsheet that triggers incorrect handling of memory during opening, aka "Excel MergeCells Record Heap Overflow Vulnerability."

Affected products

• Microsoft Excel: version 2007 only; version 2010 only
• Microsoft Excel Viewer: any version
• Microsoft Office Compatibility Pack: any version

Published 2012-05-09. Last modified 2026-06-16.