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CVE Record

CVE-2009-0561: Integer overflow in Excel in Microsoft Office 2000 SP3, Office XP SP3, Office 2003 SP3, and Office 2004 and...

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."

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

A malicious Excel file could trigger memory corruption in affected Microsoft Excel and related Office components, allowing code execution. The business risk is highest where old Office versions, Excel Viewer, Compatibility Pack, Mac converters, or SharePoint 2007 components still process untrusted spreadsheets. Exposure is likely limited to legacy Microsoft Office, Excel Viewer, Compatibility Pack, Mac Open XML converter, and SharePoint Server 2007 environments listed in the CVE. Modern environments are not shown as affected in the supplied sources. Prioritize remediation if any listed legacy Microsoft Office or SharePoint 2007 components remain. The issue enables code execution through spreadsheet handling, but urgency depends on whether those obsolete products still exist in your environment. Mitigation focus: Check Microsoft MS09-021 guidance for applicable security updates and deployment instructions.; Remove or isolate affected legacy Office and Excel-processing components where still present.; Restrict untrusted Excel attachments and downloads reaching legacy endpoints..

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Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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CVE-2009-0561 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS and timeline data

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Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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