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CRITICAL: THIS VULNERABILITY IS ACTIVELY BEING EXPLOITED IN THE WILD (CISA KEV CATALOG)
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CVE-2015-2546

Exploited

Windows - Win32k Kernel-Mode Driver

Microsoft CVSS 8.2 Updated April 30, 2026

Executive Risk Summary

"A memory corruption vulnerability exists in the Windows kernel-mode driver, allowing local users to gain privileges via a crafted application. This vulnerability affects various Windows operating systems, including Windows Vista, Windows 7, Windows 8, Windows 8.1, Windows 10, and Windows Server versions."

Anticipated Attack Path

  1. 1. Initial Exploitation: An attacker crafts a malicious application to exploit the memory corruption vulnerability.
  2. 2. Privilege Escalation: The attacker gains elevated privileges, potentially leading to a complete system compromise.
  3. 3. Post-Exploitation: The attacker can execute arbitrary code, access sensitive data, and move laterally within the network.

Am I Vulnerable?

  • Verify the presence of the vulnerability by checking the Windows version and patch level.
  • Apply the MS15-097 patch to affected systems to mitigate the vulnerability.
  • Monitor system logs for suspicious activity and potential exploitation attempts.

Operational Audit Arsenal

Target Type Driver
Target Asset win32k.sys
Standard Path C:\Windows\System32\drivers\win32k.sys
PowerShell
# 🛠️ Senior Engineer Universal Audit
# Target: win32k.sys (Driver)
$Targets = 'win32k.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

Potential disruption to system services and applications due to the kernel-mode driver update.

Internal Work Notes

Windows kernel-mode driver vulnerability (CVE-2015-2546) - apply MS15-097 patch to prevent local privilege escalation.

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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.