{
    "id": "CVE-2009-3129",
    "published": "2009-11-11 19:30:00",
    "last_modified": "2026-06-16 23:11:00",
    "cvss_score": "7.8",
    "cvss_severity": "HIGH",
    "cvss_version": "3.1",
    "cvss_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
    "cwe": "CWE-787",
    "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.\"",
    "epss_score": "0.84034",
    "epss_percentile": "0.99687",
    "kev": 1,
    "kev_due": "2022-03-24",
    "has_exploit": 1,
    "updated_at": "2026-09-26 18:16:47",
    "priority": {
        "rank": 1,
        "label": "Patch first",
        "why": "On CISA KEV — known exploited in the wild, due 2022-03-24."
    },
    "products": [
        {
            "vendor": "microsoft",
            "product": "excel"
        },
        {
            "vendor": "microsoft",
            "product": "excel_viewer"
        },
        {
            "vendor": "microsoft",
            "product": "office"
        },
        {
            "vendor": "microsoft",
            "product": "open_xml_file_format_converter"
        }
    ],
    "kev_detail": {
        "cve_id": "CVE-2009-3129",
        "date_added": "2022-03-03",
        "due_date": "2022-03-24",
        "vendor": "Microsoft",
        "product": "Excel",
        "name": "Microsoft Excel Featheader Record Memory Corruption Vulnerability",
        "ransomware": 0
    },
    "exploits": [
        {
            "source": "exploit-db",
            "ref_id": "16625",
            "title": "Microsoft Excel - Malformed FEATHEADER Record (MS09-067) (Metasploit)",
            "date": "2010-09-25",
            "url": "https://www.exploit-db.com/exploits/16625"
        },
        {
            "source": "exploit-db",
            "ref_id": "14706",
            "title": "Microsoft Excel - FEATHEADER Record (MS09-067)",
            "date": "2010-08-21",
            "url": "https://www.exploit-db.com/exploits/14706"
        }
    ],
    "refs_list": [
        "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",
        "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"
    ]
}