CVE-2009-3134

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 do not properly parse the Excel file format, which allows remote attackers to execute arbitrary code via a spreadsheet with a malformed record object, aka "Excel Field Sanitization Vulnerability."

Published: 2009-11-11 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-3134 is rated High Risk (67.8/100): CVSS Critical severity, with high exploitation likelihood (EPSS 51.24%, 98th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2009-3134

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-05-30 54.95% 51.24% -3.71%
2 2026-04-02 57.32% 54.95% -2.37%
3 2025-03-30 — 57.32% —

Full EPSS history (31 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-3134

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.3 2.0 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 10.0 [email protected]

Weakness enumeration for CVE-2009-3134

Affected software / configurations for CVE-2009-3134

Vendor Product Version Raw CPE
microsoft compatibility_pack_word_excel_powerpoint 2007 cpe:2.3:a:microsoft:compatibility_pack_word_excel_powerpoint:2007:sp1:*:*:*:*:*:*
microsoft compatibility_pack_word_excel_powerpoint 2007 cpe:2.3:a:microsoft:compatibility_pack_word_excel_powerpoint:2007:sp2:*:*:*:*:*:*
microsoft excel 2002 cpe:2.3:a:microsoft:excel:2002:sp3:*:*:*:*:*:*
microsoft excel 2003 cpe:2.3:a:microsoft:excel:2003:sp3:*:*:*:*:*:*
microsoft excel 2007 cpe:2.3:a:microsoft:excel:2007:sp1:*:*:*:*:*:*
microsoft excel 2007 cpe:2.3:a:microsoft:excel:2007:sp2:*:*:*:*:*:*
microsoft excel_viewer — cpe:2.3:a:microsoft:excel_viewer:*:sp1:*:*:*:*:*:*
microsoft excel_viewer — cpe:2.3:a:microsoft:excel_viewer:*:sp2:*:*:*:*:*:*
microsoft excel_viewer 2003 cpe:2.3:a:microsoft:excel_viewer:2003:sp3:*:*:*:*:*:*
microsoft office 2004 cpe:2.3:a:microsoft:office:2004:*:mac:*:*:*:*:*
microsoft office 2008 cpe:2.3:a:microsoft:office:2008:*:mac:*:*:*:*:*
microsoft open_xml_file_format_converter — cpe:2.3:a:microsoft:open_xml_file_format_converter:*:*:mac:*:*:*:*:*

References for CVE-2009-3134

cvelogic Threat Intelligence