CVE-2009-0561
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."
Key facts
- CVSS score
- 9.3 (v2.0)
- Severity
- HIGH
- CVSS vector
AV:N/AC:M/Au:N/C:C/I:C/A:C- Weakness (CWE)
- CWE-189
- EPSS score
- 36.9% (99th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2009-0565)
- Published
- June 10, 2009
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-0565 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- microsoft / office
- microsoft / office
- microsoft / office
- microsoft / office compatibility pack for word excel ppt 2007
- microsoft / office compatibility pack for word excel ppt 2007
- microsoft / office excel
- microsoft / office excel
- microsoft / office excel
- microsoft / office excel
- microsoft / office excel viewer
- microsoft / office excel viewer
- microsoft / office sharepoint server
- microsoft / office sharepoint server
- microsoft / office sharepoint server
- microsoft / office sharepoint server
- microsoft / open xml file format converter
References
- http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=805
- http://osvdb.org/54957
- http://secunia.com/secunia_research/2009-12/(Vendor Advisory)
- 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(US Government Resource)
- http://www.vupen.com/english/advisories/2009/1540(Vendor Advisory)
- 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
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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