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CVE-2009-2516

Windows - Kernel

Microsoft CVSS 7.1 Updated April 30, 2026

Executive Risk Summary

"The Windows kernel is vulnerable to a NULL pointer dereference, allowing local users to gain privileges via a crafted PE .exe file. This vulnerability affects Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP2, Vista Gold and SP1, and Server 2008 Gold."

Anticipated Attack Path

  1. 1. Exploitation of NULL pointer dereference vulnerability
  2. 2. Elevation of privileges
  3. 3. Arbitrary code execution

Am I Vulnerable?

  • Verify the presence of the vulnerability in the Windows kernel
  • Check for the existence of a crafted PE .exe file
  • Monitor system logs for suspicious activity

Operational Audit Arsenal

Target Type Process
Target Asset ntoskrnl.exe
Standard Path C:\Windows\System32
PowerShell
# 🛠️ Senior Engineer Universal Audit
# Target: ntoskrnl.exe (Process)
$Targets = 'ntoskrnl.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

System restart required

Internal Work Notes

Windows Kernel NULL Pointer Dereference Vulnerability (CVE-2009-2516) - apply MS09-058 patch to prevent local privilege escalation

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Intelligence Sources

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