high8.8Known exploited
CVE-2009-0238
Microsoft Office Remote Code Execution
Exploited in the wild
This vulnerability is on the CISA Known Exploited Vulnerabilities list, added 2026-04-14. Federal due date: 2026-04-28.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Impact
Microsoft Office Excel contains a remote code execution vulnerability that could allow an attacker to take complete control of an affected system if a user opens a specially crafted Excel file that includes a malformed object.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Microsoft | Excel | Versions 2000, 2002, 2003, 2007 |
| Microsoft | Excel Viewer | All versions |
| Microsoft | Office | Versions 2004, 2008 |
| Microsoft | Office Compatibility Pack | Version 2007 |
| Microsoft | Office Excel Viewer | All versions Version 2003 |
Weakness classification
References
- NVD record
- CVE.org record
- CISA KEV catalog
- http://blogs.zdnet.com/security/?p=2658
- http://isc.sans.org/diary.html?storyid=5923
- http://securitytracker.com/id?1021744
- http://www.microsoft.com/technet/security/advisory/968272.mspx
- 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
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-009
- https://exchange.xforce.ibmcloud.com/vulnerabilities/48875
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5968
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-0238