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CVE-2011-1278

• Severity: critical (CVSS 9.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 17.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2011-06-16 · updated 2026-06-16
• Weakness: CWE-119

Description

Microsoft Excel 2002 SP3 and Office 2004 for Mac do not properly validate record information during parsing of Excel spreadsheets, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted spreadsheet, aka "Excel WriteAV Vulnerability."

Affected products

• Microsoft Excel 2013 Service Pack 1: 2002-sp3
• Microsoft Office: 2004

References

• http://www.securityfocus.com/bid/48163
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-045
• https://exchange.xforce.ibmcloud.com/vulnerabilities/67716
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12687
• http://www.securityfocus.com/bid/48163
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-045
• https://exchange.xforce.ibmcloud.com/vulnerabilities/67716
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12687

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