Patch

CVE-2024-49039

with vRx

Vulnerability Overview

CVE Name

CVE-2024-49039

Severity

8.8

High

CVE Description

Windows Task Scheduler Elevation of Privilege Vulnerability

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Latest Patch info

There is no patch available at the moment, but you can use our script.

Patch Name

secure@microsoft.com

Date

12.11.2024

Script

Script Type

Remediation script

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❗ CVE-2024-49039 is a vulnerability related to the Task Scheduler service in Windows systems. Attackers may leverage this service to execute unauthorized tasks or escalate privileges on a compromised system. ℹ️ This mitigation script works as follows: Registry Path Access: The script targets the registry path HKLM:\SYSTEM\CurrentControlSet\Services\Schedule, which controls the Task Scheduler service configuration. Service Startup Modification: Sets the Start value to 4, disabling the Task Scheduler service and preventing it from launching at system startup. Verification: Confirms the registry modification by reading back the Start value. If it is successfully set to 4, the mitigation is deemed effective. Output Results: Displays clear messages about the success of the operation and advises restarting the system to apply the changes. Error Handling: Includes robust error handling to capture and report issues encountered during the registry modification process. ✅ By running this mitigation script, you can remove the exploitable functionality, preventing attackers from leveraging the vulnerability to escalate privileges and protecting your system from CVE-2024-49039.

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try {
    # Registry path for Task Scheduler service
    $registryPath = "HKLM:\SYSTEM\CurrentControlSet\Services\Schedule"
    
    # Disable Task Scheduler startup
    Write-Host "Disabling Task Scheduler service via registry..." -ForegroundColor Yellow
    Set-ItemProperty -Path $registryPath -Name "Start" -Value 4 -ErrorAction Stop
    Write-Host "Task Scheduler is now prevented from launching at startup." -ForegroundColor Green
    
    # Verify the change
    $currentValue = (Get-ItemProperty -Path $registryPath -Name "Start").Start
    if ($currentValue -eq 4) {
        Write-Host "Registry modification successful. Task Scheduler has been disabled." -ForegroundColor Green
        Write-Host "Please restart your system to ensure the configuration changes take effect." -ForegroundColor Yellow
    } else {
        Write-Host "Failed to verify the registry change. Check the registry manually." -ForegroundColor Red
    }
} catch {
    Write-Host "An unexpected error occurred while modifying the registry:" -ForegroundColor Red
    Write-Host $_.Exception.Message -ForegroundColor Red
}

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Affected OS & Apps

Windows Server 2025

Microsoft

Windows 11 24H2

Microsoft

Windows Server 2022 23H2

Microsoft

4.8

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