CVE-2009-0238
High 8.8 Exploited in the wild (KEV)
Confirmed active exploitation — CISA KEV catalog
- Name
- Microsoft Office Remote Code Execution
- Added to catalog
- Remediation due date (US federal)
- 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.
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.
Metrics
- CVSS 3.1
-
8.8 (HIGH)
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 43% (percentile: 99) as of 1 November 2026
- CWE
- CWE-94
Affected products
microsoft: excel; microsoft: excel viewer; microsoft: office; microsoft: office compatibility pack; microsoft: office excel viewer
References
- http://www.microsoft.com/technet/security/advisory/968272.mspx Vendor Advisory
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-0… Vendor Advisory
- http://www.microsoft.com/technet/security/advisory/968272.mspx Vendor Advisory
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-0… Vendor Advisory
- http://blogs.zdnet.com/security/?p=2658 Broken Link
- http://isc.sans.org/diary.html?storyid=5923 Press/Media Coverage
- http://securitytracker.com/id?1021744 Broken Link
- http://www.securityfocus.com/bid/33870 Broken Link
- http://www.symantec.com/business/security_response/writeup.jsp?docid=2009-02231… Broken Link
- http://www.us-cert.gov/cas/techalerts/TA09-104A.html US Government Resource