CVE-2009-0238
microsoft excel, microsoft excel viewer, microsoft office
Published 25 Feb 2009 · updated 16 Jun 2026 · Analyzed
Exploited in the wild
CISA added this to its Known Exploited Vulnerabilities catalog on 14 Apr 2026, with a remediation deadline of 28 Apr 2026 for US federal agencies.
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.
References
- blogs.zdnet.com/security/?p=2658 · Broken Link
- isc.sans.org/diary.html?storyid=5923 · Press/Media Coverage
- securitytracker.com/id?1021744 · Broken Link
- www.microsoft.com/technet/security/advisory/968272.mspx · Vendor Advisory
- www.securityfocus.com/bid/33870 · Broken Link
- www.symantec.com/business/security_response/writeup.jsp?docid=2009-022310-4202-99 · Broken Link
- www.us-cert.gov/cas/techalerts/TA09-104A.html · US Government Resource
- www.vupen.com/english/advisories/2009/1023 · Broken Link
- docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-009 · Vendor Advisory
- exchange.xforce.ibmcloud.com/vulnerabilities/48875 · Third Party Advisory
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5968 · Broken Link
- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-0238 · US Government Resource