{"cve":"CVE-2009-0561","nvd":{"published":"2009-06-10T18:30:00.280","modified":"2026-06-16T23:05:18.730","status":"Modified","description":"Integer overflow in Excel in Microsoft Office 2000 SP3, Office XP SP3, Office 2003 SP3, and Office 2004 and 2008 for Mac; Excel in 2007 Microsoft Office System SP1 and SP2; Open XML File Format Converter for Mac; Microsoft Office Excel Viewer 2003 SP3; Microsoft Office Excel Viewer; Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP1 and SP2; and Microsoft Office SharePoint Server 2007 SP1 and SP2 allows remote attackers to execute arbitrary code via an Excel file with a Shared String Table (SST) record with a numeric field that specifies an invalid number of unique strings, which triggers a heap-based buffer overflow, aka \"Record Integer Overflow Vulnerability.\"","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-189"],"references":["http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=805","http://osvdb.org/54957","http://secunia.com/secunia_research/2009-12/","http://www.securityfocus.com/archive/1/504190/100/0/threaded","http://www.securityfocus.com/bid/35245"],"products":["microsoft:office","microsoft:office_compatibility_pack_for_word_excel_ppt_2007","microsoft:office_excel","microsoft:office_excel_viewer","microsoft:office_sharepoint_server","microsoft:open_xml_file_format_converter"],"source":"nvd","synced_at":"2026-10-19T19:54:07.895733559+00:00"},"epss":{"cve":"CVE-2009-0561","score":0.36897,"percentile":0.98509,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}