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CVE-2009-0561

Published: Jun 10, 2009Updated: Apr 23, 2026 Sources: CVE List NVDCWE-189
9.3CVSSCRITICAL

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."

CVSS Vector Breakdown

AV:NAC:MAu:NC:CI:CA:C
Exploitability
AV:NAccess Vector
Network
AC:MAccess Complexity
Medium
Au:NAuthentication
None
Impact
C:CConfidentiality
Complete
I:CIntegrity
Complete
A:CAvailability
Complete

Weaknesses

Affected Products

and 2 more affected products View all →

Exploitability

Official Patch Available

References

and 7 more references View all →

Timeline

Published
Jun 10, 2009
Last Updated
Apr 23, 2026

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