What’s Vulnerable › Vulnerabilities

CVE-2009-0100

• Severity: critical (CVSS 9.3 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 28.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2009-04-15 · updated 2026-06-16
• Weakness: CWE-399

Description

Microsoft Office Excel 2000 SP3, 2002 SP3, 2003 SP3, and 2007 SP1; Excel in Microsoft Office 2004 and 2008 for Mac; Microsoft Office Excel Viewer and Excel Viewer 2003 SP3; and Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP1 do not properly parse the Excel spreadsheet file format, which allows remote attackers to execute arbitrary code via a crafted spreadsheet that contains a malformed object with "an offset and a two-byte value" that trigger a memory calculation error, aka "Memory Corruption Vulnerability."

Affected products

• Microsoft Office: 2004, 2008
• Microsoft Office Compatibility Pack For Word Excel Ppt 2007: all versions
• Microsoft Office Excel: 2000-sp3, 2002-sp3, 2003-sp3, 2007-sp1
• Microsoft Office Excel Viewer: 2003-sp3

References

• http://osvdb.org/53665
• http://www.fortiguardcenter.com/advisory/FGA-2009-16.html
• http://www.securityfocus.com/archive/1/502696/100/0/threaded
• http://www.securitytracker.com/id?1022039
• http://www.us-cert.gov/cas/techalerts/TA09-104A.html
• http://www.vupen.com/english/advisories/2009/1023
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-009
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6043
• http://osvdb.org/53665
• http://www.fortiguardcenter.com/advisory/FGA-2009-16.html
• http://www.securityfocus.com/archive/1/502696/100/0/threaded
• http://www.securitytracker.com/id?1022039

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