What’s Vulnerable › Vulnerabilities

CVE-2011-1988

• Severity: critical (CVSS 9.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 18.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2011-09-15 · updated 2026-06-16
• Weakness: CWE-119

Description

Microsoft Excel 2003 SP3 and 2007 SP2; Excel in Office 2007 SP2; Office 2004 and 2008 for Mac; Open XML File Format Converter for Mac; Excel Viewer SP2; and Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP2 do not properly parse records in Excel spreadsheets, which allows remote attackers to execute arbitrary code via a crafted spreadsheet, aka "Excel Heap Corruption Vulnerability."

Affected products

• Microsoft Excel 2013 Service Pack 1: 2003-sp3, 2007-sp2
• Microsoft Excel Viewer: all versions
• Microsoft Office: 2004, 2007-sp2, 2008
• Microsoft Office Compatibility Pack: 2007-sp2
• Microsoft Open Xml File Format Converter: all versions

References

• http://www.us-cert.gov/cas/techalerts/TA11-256A.html
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-072
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12836
• http://www.us-cert.gov/cas/techalerts/TA11-256A.html
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-072
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12836

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