CVE-2009-0563
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."
Key facts
- CVSS score
- 7.8 (v3.1)
- Severity
- HIGH
- CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H- Weakness (CWE)
- CWE-787
- EPSS score
- 59.6% (99th percentile)
- In CISA KEV
- Yes, added June 8, 2022
- In EU EUVD
- Yes (EUVD-2009-0567)
- Published
- June 10, 2009
- NVD last modified
- June 16, 2026
- Status
- Analyzed
CISA Known Exploited Vulnerability
Microsoft Office Buffer Overflow Vulnerability
Added to the KEV catalog on June 8, 2022; federal remediation due June 22, 2022.
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2009-0567 in the EU Vulnerability Database. ENISA flags it as known exploited. Last updated in EUVD on October 22, 2025.
View on the EU Vulnerability DatabaseAffected products
- microsoft / office
- microsoft / office
- microsoft / office
- microsoft / office
- microsoft / office
- microsoft / office
- microsoft / office
- microsoft / office compatibility pack
- microsoft / office compatibility pack
- microsoft / office word viewer
- microsoft / office word viewer
- microsoft / open xml file format converter
References
- http://osvdb.org/54959(Broken Link)
- http://www.securityfocus.com/archive/1/504204/100/0/threaded(Broken Link, Third Party Advisory, VDB Entry)
- http://www.securityfocus.com/bid/35188(Broken Link, Third Party Advisory, VDB Entry)
- http://www.securitytracker.com/id?1022356(Broken Link, Third Party Advisory, VDB Entry)
- http://www.us-cert.gov/cas/techalerts/TA09-160A.html(Broken Link, Third Party Advisory, US Government Resource)
- http://www.vupen.com/english/advisories/2009/1546(Broken Link)
- http://www.zerodayinitiative.com/advisories/ZDI-09-035(Third Party Advisory, VDB Entry)
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-027(Patch, Vendor Advisory)
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6133(Broken Link)
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-0563(US Government Resource)
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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