CVE-2009-0563
High 7.8 Exploited in the wild (KEV)
Confirmed active exploitation — CISA KEV catalog
- Name
- Microsoft Office Buffer Overflow Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply updates per vendor instructions.
Description
Stack-based buffer overflow in Microsoft Office Word 2002 SP3, 2003 SP3, and 2007 SP1 and SP2; Microsoft Office for Mac 2004 and 2008; Open XML File Format Converter for Mac; Microsoft Office Word Viewer 2003 SP3; Microsoft Office Word Viewer; and Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP1 and SP2 allows remote attackers to execute arbitrary code via a Word document with a crafted tag containing an invalid length field, aka "Word Buffer Overflow Vulnerability."
Metrics
- CVSS 3.1
-
7.8 (HIGH)
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 60% (percentile: 99) as of 1 November 2026
- CWE
- CWE-787
Affected products
microsoft: office; microsoft: office compatibility pack; microsoft: office word viewer; microsoft: open xml file format converter
References
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-0… PatchVendor Advisory
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-0… PatchVendor Advisory
- http://osvdb.org/54959 Broken Link
- http://www.securityfocus.com/archive/1/504204/100/0/threaded Broken LinkThird Party AdvisoryVDB Entry
- http://www.securityfocus.com/bid/35188 Broken LinkThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id?1022356 Broken LinkThird Party AdvisoryVDB Entry
- http://www.us-cert.gov/cas/techalerts/TA09-160A.html Broken LinkThird Party AdvisoryUS Government Resource
- http://www.vupen.com/english/advisories/2009/1546 Broken Link
- http://www.zerodayinitiative.com/advisories/ZDI-09-035 Third Party AdvisoryVDB Entry
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%… Broken Link