What’s Vulnerable › Vulnerabilities

CVE-2011-1276

• Severity: critical (CVSS 9.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 28.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2011-06-16 · updated 2026-06-16
• Weakness: CWE-119

Description

Buffer overflow in Microsoft Excel 2002 SP3, 2003 SP3, and 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 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted Excel spreadsheet, related to improper validation of record information, aka "Excel Buffer Overrun Vulnerability."

Affected products

• Microsoft Excel 2013 Service Pack 1: 2002-sp3, 2003-sp3, 2007-sp2
• Microsoft Excel Viewer: all versions
• Microsoft Office: 2004, 2008
• Microsoft Office Compatibility Pack: 2007-sp2
• Microsoft Open Xml File Format Converter: all versions

References

• http://osvdb.org/72924
• http://securityreason.com/securityalert/8330
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-045
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12451
• http://osvdb.org/72924
• http://securityreason.com/securityalert/8330
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-045
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12451

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