CVE-2009-0563
Microsoft Office contains a buffer overflow vulnerability that allows remote attackers to execute code via a Word document with a crafted tag containing an invalid length field.
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."
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H- osvdb.org/54959Broken Link
- securityfocus.com/archive/1/504204/100/0/threadedBroken LinkThird Party Advisory
- securityfocus.com/bid/35188Broken LinkThird Party Advisory
- securitytracker.com/id?1022356Broken LinkThird Party Advisory
- us-cert.gov/cas/techalerts/TA09-160A.htmlBroken LinkThird Party Advisory
- vupen.com/english/advisories/2009/1546Broken Link
- zerodayinitiative.com/advisories/ZDI-09-035Third Party AdvisoryVDB Entry
- docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-027PatchVendor Advisory
- oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6133Broken Link
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2009-0563US Government Resource
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 1587 days
- CVSS
- 7.8 HIGH
- EPSS (30-day exploit probability)
- 59.6% · top 1% of all CVEs
- Weakness
- CWE-787
- 1.Apply updates per vendor instructions.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.