{"id":"CVE-2009-3129","url":"https://www.cyber-defence.io/tools/cve/CVE-2009-3129","generatedAt":"2026-10-31T23:40:25.490Z","title":"Microsoft Excel Featheader Record Memory Corruption Vulnerability","description":"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.\"","published":"2009-11-11T19:30:01.000Z","lastModified":"2026-06-16T23:11:00.000Z","status":"Analyzed","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"3.1","score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-787"],"affected":["microsoft/excel","microsoft/excel viewer","microsoft/office","microsoft/open xml file format converter"],"epss":{"score":0.84034,"percentile":0.99693,"date":"2026-10-30","history":[{"date":"2026-09-24","score":0.84034,"percentile":0.99687}]},"kev":{"listed":true,"dateAdded":"2022-03-03","dueDate":"2022-03-24","knownRansomwareCampaignUse":"Unknown","notes":"Apply updates per vendor instructions.\nhttps://nvd.nist.gov/vuln/detail/CVE-2009-3129"},"exploits":{"count":2,"verified":true,"firstPublished":"2010-08-21","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":16625,"kind":"exploit","title":"Microsoft Excel - Malformed FEATHEADER Record (MS09-067) (Metasploit)","url":"https://www.exploit-db.com/exploits/16625","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/local/16625.rb","file":"exploits/windows/local/16625.rb","published":"2010-09-25","added":"2010-09-25","updated":"2011-03-10","author":"Metasploit","type":"local","platform":"windows","port":null,"verified":true,"codes":["CVE-2009-3129","OSVDB-59860","MS09-067"],"tags":"Metasploit Framework (MSF)","aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":"http://www.zerodayinitiative.com/advisories/ZDI-09-083/"},{"edbId":14706,"kind":"exploit","title":"Microsoft Excel - FEATHEADER Record (MS09-067)","url":"https://www.exploit-db.com/exploits/14706","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/local/14706.py","file":"exploits/windows/local/14706.py","published":"2010-08-21","added":"2010-08-21","updated":"2010-08-21","author":"anonymous","type":"local","platform":"windows","port":null,"verified":false,"codes":["OSVDB-59860","CVE-2009-3129","MS09-067"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 24 March 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"http://archives.neohapsis.com/archives/bugtraq/2009-11/0080.html","tags":["Broken Link"],"source":"secure@microsoft.com"},{"url":"http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=832","tags":["Broken Link"],"source":"secure@microsoft.com"},{"url":"http://osvdb.org/59860","tags":["Broken Link"],"source":"secure@microsoft.com"},{"url":"http://www.exploit-db.com/exploits/14706","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"http://www.securityfocus.com/bid/36945","tags":["Broken Link","Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"http://www.securitytracker.com/id?1023157","tags":["Broken Link","Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"http://www.us-cert.gov/cas/techalerts/TA09-314A.html","tags":["Third Party Advisory","US Government Resource"],"source":"secure@microsoft.com"},{"url":"http://www.zerodayinitiative.com/advisories/ZDI-09-083","tags":["Third Party Advisory","VDB Entry"],"source":"secure@microsoft.com"},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-067","tags":["Patch","Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6521","tags":["Broken Link"],"source":"secure@microsoft.com"},{"url":"http://archives.neohapsis.com/archives/bugtraq/2009-11/0080.html","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=832","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://osvdb.org/59860","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.exploit-db.com/exploits/14706","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/36945","tags":["Broken Link","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id?1023157","tags":["Broken Link","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.us-cert.gov/cas/techalerts/TA09-314A.html","tags":["Third Party Advisory","US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.zerodayinitiative.com/advisories/ZDI-09-083","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-067","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6521","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-3129","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2009-3129","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}