{"cve":{"cve_id":"CVE-2009-0238","is_kev":true,"kev_date_added":"2026-04-14","kev_vendor_project":"Microsoft","kev_product":"Office","kev_vulnerability_name":"Microsoft Office Remote Code Execution","kev_short_description":"Microsoft Office Excel contains a remote code execution vulnerability that could allow an attacker to take complete control of an affected system if a user opens a specially crafted Excel file that includes a malformed object.","kev_required_action":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","kev_due_date":"2026-04-28","kev_known_ransomware":false,"kev_notes":"https://learn.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-009 ; https://nvd.nist.gov/vuln/detail/CVE-2009-0238","kev_cwes":["CWE-94"],"epss_score":0.43063,"epss_percentile":0.98552,"epss_as_of":"2026-06-23","description":"Microsoft Office Excel 2000 SP3, 2002 SP3, 2003 SP3, and 2007 SP1; Excel Viewer 2003 Gold and SP3; Excel Viewer; Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP1; and Excel in Microsoft Office 2004 and 2008 for Mac allow remote attackers to execute arbitrary code via a crafted Excel document that triggers an access attempt on an invalid object, as exploited in the wild in February 2009 by Trojan.Mdropper.AC.","published_at":"2009-02-25T16:00:00Z","last_modified_at":"2026-06-16T23:04:33.880000Z","cvss_v3_score":8.8,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"active","ssvc_automatable":false,"ssvc_technical_impact":"total","cwes":["CWE-94"],"nvd_references":["http://www.microsoft.com/technet/security/advisory/968272.mspx","http://www.vupen.com/english/advisories/2009/1023","https://exchange.xforce.ibmcloud.com/vulnerabilities/48875","http://www.us-cert.gov/cas/techalerts/TA09-104A.html","http://www.securityfocus.com/bid/33870","http://www.symantec.com/business/security_response/writeup.jsp?docid=2009-022310-4202-99","https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-009","https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5968","http://isc.sans.org/diary.html?storyid=5923","http://securitytracker.com/id?1021744","http://blogs.zdnet.com/security/?p=2658"],"vuln_status":"Analyzed","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:31.350578Z","updated_at":"2026-06-28T23:04:53.840168Z"},"effective_severity":"HIGH","badges":["kev"],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"R","value_label":"Required"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"excel","product_name":"Excel","version_start":"2000","version_start_inclusive":true,"version_end":"2000","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:microsoft:excel:2000:sp3:*:*:*:*:*:*"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"excel","product_name":"Excel","version_start":"2002","version_start_inclusive":true,"version_end":"2002","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:microsoft:excel:2002:sp3:*:*:*:*:*:*"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"excel","product_name":"Excel","version_start":"2003","version_start_inclusive":true,"version_end":"2003","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:microsoft:excel:2003:sp3:*:*:*:*:*:*"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"excel","product_name":"Excel","version_start":"2007","version_start_inclusive":true,"version_end":"2007","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:microsoft:excel:2007:sp1:*:*:*:*:*:*"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"excel-viewer","product_name":"excel_viewer","version_start":null,"version_start_inclusive":null,"version_end":null,"version_end_inclusive":null,"cpe23_uri":"cpe:2.3:a:microsoft:excel_viewer:*:*:*:*:*:*:*:*"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"office","product_name":"office","version_start":"2004","version_start_inclusive":true,"version_end":"2004","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:microsoft:office:2004:*:*:*:*:macos:*:*"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"office","product_name":"office","version_start":"2008","version_start_inclusive":true,"version_end":"2008","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:microsoft:office:2008:*:*:*:*:macos:*:*"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"office-compatibility-pack","product_name":"office_compatibility_pack","version_start":"2007","version_start_inclusive":true,"version_end":"2007","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:microsoft:office_compatibility_pack:2007:sp1:*:*:*:*:*:*"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"office-excel-viewer","product_name":"office_excel_viewer","version_start":null,"version_start_inclusive":null,"version_end":null,"version_end_inclusive":null,"cpe23_uri":"cpe:2.3:a:microsoft:office_excel_viewer:*:*:*:*:*:*:*:*"},{"vendor_slug":"microsoft","vendor_name":"Microsoft","product_slug":"office-excel-viewer","product_name":"office_excel_viewer","version_start":"2003","version_start_inclusive":true,"version_end":"2003","version_end_inclusive":true,"cpe23_uri":"cpe:2.3:a:microsoft:office_excel_viewer:2003:sp3:*:*:*:*:*:*"}],"exploit_refs":[],"news":[],"references":[{"url":"http://www.microsoft.com/technet/security/advisory/968272.mspx","source_type":"MISC","tags":[]},{"url":"http://www.vupen.com/english/advisories/2009/1023","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/48875","source_type":"MISC","tags":[]},{"url":"http://www.us-cert.gov/cas/techalerts/TA09-104A.html","source_type":"MISC","tags":[]},{"url":"http://www.securityfocus.com/bid/33870","source_type":"MISC","tags":[]},{"url":"http://www.symantec.com/business/security_response/writeup.jsp?docid=2009-022310-4202-99","source_type":"MISC","tags":[]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-009","source_type":"MISC","tags":[]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5968","source_type":"MISC","tags":[]},{"url":"http://isc.sans.org/diary.html?storyid=5923","source_type":"MISC","tags":[]},{"url":"http://securitytracker.com/id?1021744","source_type":"MISC","tags":[]},{"url":"http://blogs.zdnet.com/security/?p=2658","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2009-02-25T16:00:00Z","label":"CVE published","source":null},{"type":"cisa_reported","at":"2026-04-14T00:00:00Z","label":"Added to CISA KEV catalog","source":"kev"},{"type":"ssvc_changed","at":"2026-06-24T00:30:43.703670Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-24T00:30:43.703670Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-06-24T00:30:43.703670Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-24T00:30:43.703670Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-24T00:30:43.703670Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-06-24T00:30:43.703670Z","label":"CVSS score revised","source":"vulnrichment"}]}