CVE-2009-0238
HIGH severity · CVSS 8.8 · Code injection · actively exploited (CISA KEV)
8.8CVSS HIGH exploited
Actively exploited in the wild (CISA Known Exploited Vulnerabilities).
Added to KEV 2026-04-14. US federal agencies must patch by 2026-04-28.
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)43%
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products we track (2)
Recommendation
This vulnerability is being actively exploited in the wild — patch affected products urgently. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://www.microsoft.com/technet/security/advisory/968272.mspxAdvisory
- http://blogs.zdnet.com/security/?p=2658
- http://isc.sans.org/diary.html?storyid=5923
- http://securitytracker.com/id?1021744
- http://www.securityfocus.com/bid/33870
- http://www.symantec.com/business/security_response/writeup.jsp?docid=2009-022310-4202-99
- http://www.us-cert.gov/cas/techalerts/TA09-104A.html
- http://www.vupen.com/english/advisories/2009/1023