CVE-2012-0143: Microsoft Excel

High severity, CVSS 9.3. EPSS: 22.4% chance of exploitation in the next 30 days.

Microsoft Excel 2003 SP3 and Office 2008 for Mac do not properly handle memory during the opening of files, which allows remote attackers to execute arbitrary code via a crafted spreadsheet, aka "Excel Memory Corruption Using Various Modified Bytes Vulnerability."

Affected products

• Microsoft Excel: version 2003 only
• Microsoft Office: version 2008 only

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