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CRITICAL: THIS VULNERABILITY IS ACTIVELY BEING EXPLOITED IN THE WILD (CISA KEV CATALOG)
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CVE-2009-0563

Exploited

Microsoft Office Word

Microsoft CVSS 7.8 Updated April 30, 2026

Executive Risk Summary

"A stack-based buffer overflow vulnerability exists in Microsoft Office Word, allowing remote attackers to execute arbitrary code via a crafted Word document. This vulnerability affects various versions of Microsoft Office Word, including 2002 SP3, 2003 SP3, and 2007 SP1 and SP2."

Anticipated Attack Path

  1. 1. An attacker sends a crafted Word document to a victim
  2. 2. The victim opens the document in a vulnerable version of Microsoft Office Word
  3. 3. The buffer overflow vulnerability is triggered, allowing the attacker to execute arbitrary code

Am I Vulnerable?

  • Check for vulnerable versions of Microsoft Office Word
  • Apply the MS09-027 patch to vulnerable systems
  • Use alternative word processing software until a patch can be applied

Operational Audit Arsenal

Target Type Process
Target Asset winword.exe
Standard Path C:\Program Files\Microsoft Office\Office12\WINWORD.EXE
PowerShell
# 🛠️ Senior Engineer Universal Audit
# Target: winword.exe (Process)
$Targets = 'winword.exe'
$SearchPaths = @("$env:windir\System32", "$env:ProgramFiles", "${env:ProgramFiles(x86)}")

Get-ChildItem -Path $SearchPaths -Include $Targets -Recurse -ErrorAction SilentlyContinue | 
Select-Object FullName, @{Name="Version";Expression={$_.VersionInfo.ProductVersion}}

Patch Impact Forecast

Reboot Required Likely

Minimal, but may require restarting Microsoft Office Word

Internal Work Notes

Vulnerability in Microsoft Office Word allows remote code execution, patch MS09-027 required

Technical Intelligence & Operational Utilities • Delivered Weekly

Intelligence Sources

Related Microsoft Threats

Data compiled from NVD, MSRC, and CISA KEV Catalog. Intelligence synthesized via AI. Scripts provided for diagnostic purposes under MIT License.