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 Micr
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."
- Published
- Jun 10, 2009
- Updated
- Jun 16, 2026
- EPSS
- 36.9% · 98th percentile
- CWE
- CWE-189
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Report tools
Action score
48
Plan
Add it to your regular patch cycle.
- CVSS
- 37 / 40 · 9.3 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 11 / 30 · 36.9%
Affected systems
| Vendor | Product | CPE |
|---|---|---|
| microsoft | office | cpe:2.3:a:microsoft:office |
| microsoft | office compatibility pack for word excel ppt 2007 | cpe:2.3:a:microsoft:office_compatibility_pack_for_word_excel_ppt_2007 |
| microsoft | office excel | cpe:2.3:a:microsoft:office_excel |
| microsoft | office excel viewer | cpe:2.3:a:microsoft:office_excel_viewer |
| microsoft | office sharepoint server | cpe:2.3:a:microsoft:office_sharepoint_server |
| microsoft | open xml file format converter | cpe:2.3:a:microsoft:open_xml_file_format_converter |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- microsoft office2004
- microsoft office2008
- microsoft officexp
- microsoft office compatibility pack for word excel ppt 2007all versions
- microsoft office excel2000
- microsoft office excel2003
- microsoft office excel2007
- microsoft office excel viewerall versions
- microsoft office excel viewer2003
- microsoft office sharepoint server2007
- microsoft open xml file format converterall versions
Same product
microsoft: all recordsOther highest-scoring records for the same primary product.
- CVE-2012-0158The (1) ListView, (2) ListView2, (3) TreeView, and (4) TreeView2 ActiveX controls in MSCOMCTL.OCX in the Common Controls in Microsoft OfficeKEV95Now
- CVE-2018-0798Equation Editor in Microsoft Office 2007, Microsoft Office 2010, Microsoft Office 2013, and Microsoft Office 2016 allows a remote code execuKEV94Now
- CVE-2017-11882Microsoft Office 2007 Service Pack 3, Microsoft Office 2010 Service Pack 2, Microsoft Office 2013 Service Pack 1, and Microsoft Office 2016 KEV91Now
- CVE-2017-0199Microsoft Office 2007 SP3, Microsoft Office 2010 SP2, Microsoft Office 2013 SP1, Microsoft Office 2016, Microsoft Windows Vista SP2, WindowsKEV91Now
- CVE-2015-1641Microsoft Word 2007 SP3, Office 2010 SP2, Word 2010 SP2, Word 2013 SP1, Word 2013 RT SP1, Word for Mac 2011, Office Compatibility Pack SP3, KEV90Now
- CVE-2018-0802Equation Editor in Microsoft Office 2007, Microsoft Office 2010, Microsoft Office 2013, and Microsoft Office 2016 allow a remote code executKEV89Now
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
No fix version is recorded for this entry. Check the references for vendor advisories.
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
Technical details
Attack conditions
If successful
- Confidentiality
- C · data can be read
- Integrity
- C · data or configuration can be modified
- Availability
- C · the service can be disrupted
- Attack complexity
- M
- Confidentiality impact
- C
- Integrity impact
- C
- Availability impact
- C
Weakness class (CWE)
CWE-189 · Numeric ErrorsCVSS vector
AV:N/AC:M/Au:N/C:C/I:C/A:C
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpChange log
No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.
References
- labs.idefense.com/intelligence/vulnerabilities/display.php?id=805
- osvdb.org/54957
- secunia.com/secunia_research/2009-12/
- www.securityfocus.com/archive/1/504190/100/0/threaded
- www.securityfocus.com/bid/35245
- www.securitytracker.com/id?1022351
- www.us-cert.gov/cas/techalerts/TA09-160A.html
- www.vupen.com/english/advisories/2009/1540
- docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-021
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5925
Vendor advisories and official records. Exploit/PoC links are deliberately left out.