Read the docs
TI-2009-00540 Aliases CVE-2009-0561GHSA-5q7x-rmh4-jxrr

Integer overflow in Excel in Microsoft Office 2000 SP3, Office XP SP3, Office 2003 SP3…

Priority HIGH 66CWE-189Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Medium
Impact type
Code execution
Confidentiality · integrity · availability
Complete · Complete · Complete
Fix status
No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-189 and the CVSS impact.

Summary

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."

Why it matters now

EPSS 0.36897 98th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 16

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:office:2004:*:mac:*:*:*:*:*2004VulnerableMicrosoft
cpe:2.3:a:microsoft:office:2008:*:mac:*:*:*:*:*2008VulnerableMicrosoft
cpe:2.3:a:microsoft:office:xp:sp3:*:*:*:*:*:*xp sp3VulnerableMicrosoft
cpe:2.3:a:microsoft:office_compatibility_pack_for_word_excel_ppt_2007:*:sp1:*:*:*:*:*:*all versionsVulnerableMicrosoft
cpe:2.3:a:microsoft:office_compatibility_pack_for_word_excel_ppt_2007:*:sp2:*:*:*:*:*:*all versionsVulnerableMicrosoft
cpe:2.3:a:microsoft:office_excel:2000:sp3:*:*:*:*:*:*2000 sp3VulnerableMicrosoft
cpe:2.3:a:microsoft:office_excel:2003:sp3:*:*:*:*:*:*2003 sp3VulnerableMicrosoft
cpe:2.3:a:microsoft:office_excel:2007:sp1:*:*:*:*:*:*2007 sp1VulnerableMicrosoft
cpe:2.3:a:microsoft:office_excel:2007:sp2:*:*:*:*:*:*2007 sp2VulnerableMicrosoft
cpe:2.3:a:microsoft:office_excel_viewer:*:*:*:*:*:*:*:*all versionsVulnerableMicrosoft
  • cpe:2.3:a:microsoft:office:2004:*:mac:*:*:*:*:* Versions 2004 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:office:2008:*:mac:*:*:*:*:* Versions 2008 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:office:xp:sp3:*:*:*:*:*:* Versions xp sp3 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:office_compatibility_pack_for_word_excel_ppt_2007:*:sp1:*:*:*:*:*:* Versions all versions Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:office_compatibility_pack_for_word_excel_ppt_2007:*:sp2:*:*:*:*:*:* Versions all versions Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:office_excel:2000:sp3:*:*:*:*:*:* Versions 2000 sp3 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:office_excel:2003:sp3:*:*:*:*:*:* Versions 2003 sp3 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:office_excel:2007:sp1:*:*:*:*:*:* Versions 2007 sp1 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:office_excel:2007:sp2:*:*:*:*:*:* Versions 2007 sp2 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:office_excel_viewer:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·Microsoft
Show 6 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:microsoft:office_excel_viewer:2003:sp3:*:*:*:*:*:*2003 sp3VulnerableMicrosoft
cpe:2.3:a:microsoft:office_sharepoint_server:2007:sp1:x32:*:*:*:*:*2007 sp1VulnerableMicrosoft
cpe:2.3:a:microsoft:office_sharepoint_server:2007:sp1:x64:*:*:*:*:*2007 sp1VulnerableMicrosoft
cpe:2.3:a:microsoft:office_sharepoint_server:2007:sp2:x32:*:*:*:*:*2007 sp2VulnerableMicrosoft
cpe:2.3:a:microsoft:office_sharepoint_server:2007:sp2:x64:*:*:*:*:*2007 sp2VulnerableMicrosoft
cpe:2.3:a:microsoft:open_xml_file_format_converter:*:*:mac:*:*:*:*:*all versionsVulnerableMicrosoft
  • cpe:2.3:a:microsoft:office_excel_viewer:2003:sp3:*:*:*:*:*:* Versions 2003 sp3 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:office_sharepoint_server:2007:sp1:x32:*:*:*:*:* Versions 2007 sp1 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:office_sharepoint_server:2007:sp1:x64:*:*:*:*:* Versions 2007 sp1 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:office_sharepoint_server:2007:sp2:x32:*:*:*:*:* Versions 2007 sp2 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:office_sharepoint_server:2007:sp2:x64:*:*:*:*:* Versions 2007 sp2 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:open_xml_file_format_converter:*:*:mac:*:*:*:*:* Versions all versions Vulnerable ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2009-0561
  2. 2026-10-03 Alias added: GHSA-5q7x-rmh4-jxrr

References

Advisory 4

Other 2

  • TI-2023-09240 Microsoft Outlook Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-01013 A remote code execution vulnerability exists in Microsoft Excel software when the… KEVCVSS 3.1HIGH 8.8
  • TI-2019-00335 Command injection in Microsoft Office KEVCVSS 3.1HIGH 8.8
  • TI-2018-00739 Out-of-bounds write in Microsoft Equation Editor KEVCVSS 3.1HIGH 8.8
  • TI-2015-02130 Microsoft PowerPoint 2007 SP3, Word 2007 SP3, PowerPoint 2010 SP2, Word 2010 SP2… KEVCVSS 3.1HIGH 8.8
  • TI-2015-01588 Microsoft Office 2013 SP1 and 2013 RT SP1 allows remote attackers to execute arbitrary… KEVCVSS 3.1HIGH 8.8
See all 1024 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences