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CRITICAL: THIS VULNERABILITY IS ACTIVELY BEING EXPLOITED IN THE WILD (CISA KEV CATALOG)
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CVE-2017-0213

Exploited

Windows - COM Aggregate Marshaler

Microsoft CVSS 7.3 Updated April 30, 2026

Executive Risk Summary

"The Windows COM Aggregate Marshaler vulnerability allows an attacker to elevate privileges on a Windows system by running a specially crafted application. This vulnerability affects various Windows versions, including Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, Windows RT 8.1, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016."

Anticipated Attack Path

  1. 1. Initial Exploitation: An attacker runs a specially crafted application on the Windows system.
  2. 2. Privilege Escalation: The attacker exploits the COM Aggregate Marshaler vulnerability to elevate privileges.
  3. 3. Post-Exploitation: The attacker gains access to sensitive data and system resources.

Am I Vulnerable?

  • Verify the presence of the vulnerability on the system by checking the version of the COM Aggregate Marshaler.
  • Check for any suspicious activity or unusual system behavior that may indicate exploitation.
  • Apply the recommended patch or workaround to mitigate the vulnerability.

Operational Audit Arsenal

Target Type Windows Service
Target Asset comsvcs.dll
Standard Path C:\Windows\System32\comsvcs.dll
PowerShell
# 🛠️ Senior Engineer Universal Audit
# Target: comsvcs.dll (Windows Service)
$Targets = 'comsvcs.dll'
$SearchPaths = @("$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 to Moderate

Internal Work Notes

Windows COM Elevation of Privilege Vulnerability (CVE-2017-0213) - Apply patch or workaround to prevent privilege escalation attacks.

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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.