CVE DATABASE / CVE-2009-3129
CVE-2009-3129
Microsoft Excel Featheader Record Memory Corruption Vulnerability
Confirmed exploited in the wild. Added 2022-03-03.
Federal remediation due 2022-03-24.
Required action: Apply updates per vendor instructions.
Summary
Microsoft Office Excel 2002 SP3, 2003 SP3, and 2007 SP1 and SP2; Office 2004 and 2008 for Mac; Open XML File Format Converter for Mac; Office Excel Viewer 2003 SP3; Office Excel Viewer SP1 and SP2; and Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP1 and SP2 allows remote attackers to execute arbitrary code via a spreadsheet with a FEATHEADER record containing an invalid cbHdrData size element that affects a pointer offset, aka "Excel Featheader Record Memory Corruption Vulnerability."
CVSS 3.1 breakdown
| Base score | 7.8 (HIGH) |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| Attack vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | REQUIRED |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity | HIGH |
| Availability | HIGH |
Weakness type (CWE)
Affected products
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References
- http://archives.neohapsis.com/archives/bugtraq/2009-11/0080.html
- http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=832
- http://osvdb.org/59860
- http://www.exploit-db.com/exploits/14706
- http://www.securityfocus.com/bid/36945
- http://www.securitytracker.com/id?1023157
- http://www.us-cert.gov/cas/techalerts/TA09-314A.html
- http://www.zerodayinitiative.com/advisories/ZDI-09-083
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-067
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6521
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-3129
Data: NIST NVD + CISA KEV. NVD last modified 2026-04-22. Always verify against the vendor advisory before acting.