CVE-2009-0561

highpriority · attend · 50EPSS 0.369 · 99 %ileEUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

36.9% (99th) EPSS

CVSS 9.3 · high

Is it mine?

12 products

Check your exposure

Who says so?

2 sources

enisa_euvd · nvd

EPSS · scored 2026-10-27

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

Technical severity, 0–10. One row per scoring source.

9.3

010

base score 0–10 · higher = more severe · hover a vector to decode

v2.09.3highAV:N/AC:M/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 8.6 · impact 10

v2.09.3highAV:N/AC:M/Au:N/C:C/I:C/A:C/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-189USprimary

affected products (12)

Products and version ranges known to be affected.

n/a n/a≤ n/aenisa_euvdEU
microsoft office= 2004nvdUScpe:2.3:a:microsoft:office:*:*:*:*:*:*:*:*
microsoft office= 2008nvdUScpe:2.3:a:microsoft:office:*:*:*:*:*:*:*:*
microsoft office= xpnvdUScpe:2.3:a:microsoft:office:*:*:*:*:*:*:*:*
microsoft office compatibility pack for word excel ppt 2007all versionsnvdUScpe:2.3:a:microsoft:office_compatibility_pack_for_word_excel_ppt_2007:*:*:*:*:*:*:*:*
microsoft office excel= 2000nvdUScpe:2.3:a:microsoft:office_excel:*:*:*:*:*:*:*:*
microsoft office excel= 2003nvdUScpe:2.3:a:microsoft:office_excel:*:*:*:*:*:*:*:*
microsoft office excel= 2007nvdUScpe:2.3:a:microsoft:office_excel:*:*:*:*:*:*:*:*
microsoft office excel viewerall versionsnvdUScpe:2.3:a:microsoft:office_excel_viewer:*:*:*:*:*:*:*:*
microsoft office excel viewer= 2003nvdUScpe:2.3:a:microsoft:office_excel_viewer:*:*:*:*:*:*:*:*
microsoft office sharepoint server= 2007nvdUScpe:2.3:a:microsoft:office_sharepoint_server:*:*:*:*:*:*:*:*
microsoft open xml file format converterall versionsnvdUScpe:2.3:a:microsoft:open_xml_file_format_converter:*:*:*:*:*:*:*:*

also known as (2)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

enisa_euvd nvd NVD CVE.org MITRE

published 2009-06-10modified 2026-06-16

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+1337 more

references (20)

External citations — patches, advisories, analysis.

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