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CVE-2012-4775

Internet Explorer 9 - CTreeNode

Microsoft CVSS 8.8 Updated April 30, 2026

Executive Risk Summary

"A use-after-free vulnerability in Microsoft Internet Explorer 9 allows remote attackers to execute arbitrary code via a crafted web site. This vulnerability can be exploited by an unauthenticated attacker to gain control of the affected system."

Anticipated Attack Path

  1. 1. Initial Exploitation: Attacker crafts a malicious web site to exploit the CTreeNode use-after-free vulnerability
  2. 2. Post-Exploitation: Attacker gains control of the affected system, potentially leading to lateral movement and further exploitation
  3. 3. Persistence: Attacker establishes a persistent presence on the affected system, potentially leading to long-term compromise

Am I Vulnerable?

  • Verify that Internet Explorer 9 is updated to the latest version
  • Ensure that the system has the latest security patches installed
  • Monitor system logs for suspicious activity

Operational Audit Arsenal

Target Type Process
Target Asset iexplore.exe
Standard Path C:\Program Files\Internet Explorer
PowerShell
# 🛠️ Senior Engineer Universal Audit
# Target: iexplore.exe (Process)
$Targets = 'iexplore.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

Moderate

Internal Work Notes

Apply MS12-071 patch to Internet Explorer 9 to mitigate CTreeNode use-after-free vulnerability. PowerShell audit one-liner: Get-HotFix -Id KB2744842

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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.