Live › vulnerability › CVE-2009-0238
Go to dashboardMicrosoft Excel has a remote code execution bug triggered by opening a specially crafted file containing a malformed object. An attacker who gets a user to open the file can take full control of the machine, and CISA lists it as actively exploited.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 5h before NVD. All times on this page are UTC.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Microsoft Office | vendor | – | – |
| microsoft excel | vendor | = 2000 | – |
| microsoft excel | vendor | = 2002 | – |
| microsoft excel | vendor | = 2003 | – |
| microsoft excel | vendor | = 2007 | – |
| microsoft excel viewer | vendor |
| – |
| – |
| microsoft office | vendor | = 2004 | – |
| microsoft office | vendor | = 2008 | – |
| microsoft office compatibility pack | vendor | = 2007 | – |
| microsoft office excel viewer | vendor | – | – |
| microsoft office excel viewer | vendor | = 2003 | – |
Unknown from the sources.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
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.
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