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CVE-2009-3129

HighPublished

Microsoft Excel Featheader Record Memory Corruption Vulnerability

Published: Nov 11, 2009
Updated: Oct 22, 2025
Assigning CNA: microsoft
Evidence observed: Aug 21, 2010

Primary CVSS

7.8/ 10High

nvd · CVSS 3.1

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS probability estimate

85.6%

High · next 30 days

Percentile: 99.7%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

CISA Known Exploited

This CVE appears in the CISA Known Exploited Vulnerabilities catalog.

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."

Sources

Microsoft Excel - FEATHEADER Record (MS09-067)Exploit
anonymous · windows · Aug 21, 2010
Microsoft Excel - Malformed FEATHEADER Record (MS09-067) (Metasploit)Exploit
Metasploit · windows · Sep 25, 2010

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