What’s Vulnerable › Vulnerabilities
CVE-2009-0561
- Severity: critical (CVSS 9.3 v2.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 36.9% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2009-06-10 · updated 2026-06-16
- Weakness: CWE-189
Description
Integer overflow in Excel in Microsoft Office 2000 SP3, Office XP SP3, Office 2003 SP3, and Office 2004 and 2008 for Mac; Excel in 2007 Microsoft Office System SP1 and SP2; Open XML File Format Converter for Mac; Microsoft Office Excel Viewer 2003 SP3; Microsoft Office Excel Viewer; Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP1 and SP2; and Microsoft Office SharePoint Server 2007 SP1 and SP2 allows remote attackers to execute arbitrary code via an Excel file with a Shared String Table (SST) record with a numeric field that specifies an invalid number of unique strings, which triggers a heap-based buffer overflow, aka "Record Integer Overflow Vulnerability."
Affected products
- Microsoft Office: 2004, 2008, xp-sp3
- Microsoft Office Compatibility Pack For Word Excel Ppt 2007: all versions
- Microsoft Office Excel: 2000-sp3, 2003-sp3, 2007-sp1, 2007-sp2
- Microsoft Office Excel Viewer: 2003-sp3
- Microsoft Office Sharepoint Server: 2007-sp1, 2007-sp2
- Microsoft Open Xml File Format Converter: all versions
References
- http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=805
- http://osvdb.org/54957
- http://secunia.com/secunia_research/2009-12/
- http://www.securityfocus.com/archive/1/504190/100/0/threaded
- http://www.securityfocus.com/bid/35245
- http://www.securitytracker.com/id?1022351
- http://www.us-cert.gov/cas/techalerts/TA09-160A.html
- http://www.vupen.com/english/advisories/2009/1540
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-021
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5925
- http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=805
- http://osvdb.org/54957
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