{"cve_id":"CVE-2009-3129","published":"2009-11-11T19:30:00.530000+00:00","last_modified":"2026-06-16T23:11:00.237000+00:00","vuln_status":"Analyzed","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.\"","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","base_score":7.8,"base_severity":"HIGH","attack_vector":"LOCAL","privileges_req":"NONE","user_interaction":"REQUIRED","scope":"UNCHANGED","impact_c":"HIGH","impact_i":"HIGH","impact_a":"HIGH","cwe_ids":["CWE-787"],"in_kev":true,"kev_date_added":"2022-03-03","kev_ransomware":false,"epss_score":0.84034,"epss_percentile":0.99693,"cap_rule_version":"0.1.1","stage":"EXECUTION","req_access":"NONE","req_vector":"LOCAL","req_user_interaction":true,"grant_access":"USER","caps":["CODE_EXEC"],"terminal":false,"cap_confidence":"high","ingested_at":"2026-09-18T07:52:03.801583+00:00","first_seen":"2009-11-11T19:30:00.530000+00:00","kev_first_seen":"2022-03-03T00:00:00+00:00","novelty_score":0.0,"novelty_reasons":[],"novelty_at":null,"vendors":["microsoft"],"products":["excel","excel_viewer","office","open_xml_file_format_converter"],"affected":[{"vendor":"microsoft","product":"excel","ranges":["2002","2003","2007"]},{"vendor":"microsoft","product":"excel_viewer","ranges":["all versions","2003"]},{"vendor":"microsoft","product":"office","ranges":["2004","2008"]},{"vendor":"microsoft","product":"open_xml_file_format_converter","ranges":["all versions"]}]}