Home Microsoft CVE-2011-3406
Back to Microsoft

CVE-2011-3406

Windows - Active Directory

Microsoft CVSS 8.8 Updated April 30, 2026

Executive Risk Summary

"A buffer overflow vulnerability exists in Active Directory, allowing remote authenticated users to execute arbitrary code via a crafted query. This vulnerability affects various Windows operating systems, including Windows XP, Windows Server 2003, Windows Vista, Windows Server 2008, and Windows 7."

Anticipated Attack Path

  1. 1. Initial exploitation of the buffer overflow vulnerability
  2. 2. Execution of arbitrary code on the Active Directory server
  3. 3. Potential lateral movement and further exploitation of the network

Am I Vulnerable?

  • Verify that the Active Directory server is running a vulnerable version of Windows
  • Check for any suspicious or unusual network activity
  • Apply the MS11-095 patch to remediate the vulnerability

Operational Audit Arsenal

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

Potential disruption to Active Directory services

Internal Work Notes

Apply MS11-095 patch to remediate Active Directory buffer overflow vulnerability (CVE-2011-3406)

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.