CVE-2009-0238Microsoft 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…
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It affects microsoft excel and 4 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Apr 14, 2026; federal agencies had to remediate by Apr 28, 2026. Treat that date as your deadline.
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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.
- CVSS
- 8.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-94
- Known exploited
- Added to CISA KEV Apr 14, 2026; federal remediation due Apr 28, 2026Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- EPSS (exploitation in the next 30 days)
- 42.94% (percentile 99)
- Assigned by
- microsoft
- NVD analysis
- Analyzed
- Record last updated
- Apr 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
microsoft excel microsoft:excel | 2000; 2002; 2003; 2007 | NVD |
microsoft excel_viewer microsoft:excel_viewer | all versions | NVD |
microsoft office microsoft:office | 2004; 2008 | NVD |
microsoft office_compatibility_pack microsoft:office_compatibility_pack | 2007 | NVD |
microsoft office_excel_viewer microsoft:office_excel_viewer | all versions; 2003 | NVD |
References
- http://www.microsoft.com/technet/security/advisory/968272.mspxx-refsource-confirm, vendor-advisory
- http://www.vupen.com/english/advisories/2009/1023vdb-entry, x-refsource-vupen, broken-link
- https://exchange.xforce.ibmcloud.com/vulnerabilities/48875vdb-entry, x-refsource-xf, third-party-advisory
- http://www.us-cert.gov/cas/techalerts/TA09-104A.htmlthird-party-advisory, x-refsource-cert, us-government-resource
- http://www.securityfocus.com/bid/33870vdb-entry, x-refsource-bid, broken-link
- http://www.symantec.com/business/security_response/writeup.jsp?docid=2009-022310-4202-99x-refsource-misc, broken-link
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-009vendor-advisory, x-refsource-ms
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5968vdb-entry, signature, x-refsource-oval, broken-link
- http://isc.sans.org/diary.html?storyid=5923x-refsource-misc, press/media-coverage
- http://securitytracker.com/id?1021744vdb-entry, x-refsource-sectrack, broken-link
- http://blogs.zdnet.com/security/?p=2658x-refsource-misc, broken-link
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-0238us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.