What’s Vulnerable › Vulnerabilities

CVE-2011-1990

• Severity: critical (CVSS 9.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 20.5% 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 2007 SP2; Excel in Office 2007 SP2; Excel Viewer SP2; Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP2; and Excel Services on Office SharePoint Server 2007 SP2 do not properly validate the sign of an unspecified array index, which allows remote attackers to execute arbitrary code via a crafted spreadsheet, aka "Excel Out of Bounds Array Indexing Vulnerability."

Affected products

• Microsoft Excel 2013 Service Pack 1: 2007-sp2
• Microsoft Excel Viewer: all versions
• Microsoft Office: 2007-sp2
• Microsoft Office Compatibility Pack: 2007-sp2
• Microsoft SharePoint Server: 2007-sp2

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%3A11982
• 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%3A11982

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