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CVE-2025-49686

Windows - TCP/IP

Microsoft CVSS 7.8 Updated March 12, 2026

Executive Risk Summary

"A null pointer dereference vulnerability in Windows TCP/IP allows an authorized attacker to elevate privileges locally, potentially leading to unauthorized access to sensitive data and system resources. This vulnerability can be exploited by an attacker with local access to the system, and successful exploitation could result in a significant security breach."

Operational Audit Arsenal

Target Type Driver
Target Asset tcpip.sys
Standard Path %windir%System32drivers
PowerShell
# 🛠️ Senior Engineer Universal Audit
# Target: tcpip.sys (Driver)
$Targets = 'tcpip.sys'
$SearchPaths = @("$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

Network services

Internal Work Notes

CVE-2025-49686: Local privilege escalation vulnerability in Windows TCP/IP, requiring patching and reboot to mitigate

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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.