Is CVE-2009-0238 being actively exploited?

Yes. CVE-2009-0238 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added on April 14, 2026.

What is the CVSS score for CVE-2009-0238?

CVE-2009-0238 has a CVSS 3.1 base score of 8.8 (HIGH).

CVE-2009-0238

HIGH · CVSS 8.8CISA KEV: actively exploitedEPSS 42.9%EU EUVD: exploited

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.

Key facts

CVSS score: 8.8 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-94
EPSS score: 42.9% (99th percentile)
In CISA KEV: Yes, added April 14, 2026
In EU EUVD: Yes (EUVD-2009-0246)
Published: February 25, 2009
NVD last modified: June 16, 2026
Status: Analyzed

CISA Known Exploited Vulnerability

Microsoft Office Remote Code Execution

Added to the KEV catalog on April 14, 2026; federal remediation due April 28, 2026.

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2009-0246 in the EU Vulnerability Database. ENISA flags it as known exploited. Last updated in EUVD on April 15, 2026.

View on the EU Vulnerability Database

Affected products

microsoft / excel
microsoft / excel
microsoft / excel
microsoft / excel
microsoft / excel viewer
microsoft / office
microsoft / office
microsoft / office compatibility pack
microsoft / office excel viewer
microsoft / office excel viewer

References

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.microsoft.com/technet/security/advisory/968272.mspx(Vendor Advisory)
http://www.securityfocus.com/bid/33870(Broken Link)
http://www.symantec.com/business/security_response/writeup.jsp?docid=2009-022310-4202-99(Broken Link)
http://www.us-cert.gov/cas/techalerts/TA09-104A.html(US Government Resource)
http://www.vupen.com/english/advisories/2009/1023(Broken Link)
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-009(Vendor Advisory)
https://exchange.xforce.ibmcloud.com/vulnerabilities/48875(Third Party Advisory)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5968(Broken Link)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-0238(US Government Resource)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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