CVE-2025-15467: Siemens Desigo CC Critical RCE — Detection and Hardening Guide

---
title: Potential Desigo CC RCE - Unusual Child Process
id: 8a2c4f15-6b9d-4a3e-8f1c-9d2e3a4b5c6d
status: experimental
description: Detects Desigo CC spawning suspicious shells or utilities, indicating potential successful RCE via CVE-2025-15467.
references:
  - https://www.cisa.gov/news-events/ics-advisories/icsa-26-209-01
author: Security Arsenal
date: 2026/04/06
tags:
  - attack.execution
  - attack.t1059
logsource:
  category: process_creation
  product: windows
detection:
  selection_parent:
    ParentImage|contains:
      - '\Siemens\'
    ParentImage|contains:
      - 'CCService'
      - 'Desigo'
  selection_child:
    Image|endswith:
      - '\cmd.exe'
      - '\powershell.exe'
      - '\pwsh.exe'
      - '\wscript.exe'
      - '\cscript.exe'
  condition: all of selection_*
falsepositives:
  - Legitimate administrative debugging by authorized staff
level: critical
---
title: Desigo CC Service Crash - DoS Indicator
id: 9b3d5e26-7c0e-5f4f-0g2h-1i3j4k5l6m7n
status: experimental
description: Detects application crashes in Desigo CC binaries which may indicate exploit attempts triggering the buffer overflow.
references:
  - https://www.cisa.gov/news-events/ics-advisories/icsa-26-209-01
author: Security Arsenal
date: 2026/04/06
tags:
  - attack.impact
  - attack.t1499
logsource:
  category: application_crash
  product: windows
detection:
  selection:
    TargetImage|contains:
      - 'CCService.exe'
      - 'Desigo'
falsepositives:
  - Rare software instability unrelated to exploitation
level: high


**KQL (Microsoft Sentinel / Defender)**

// Hunt for Desigo CC processes spawning shells (Post-Exploitation)
DeviceProcessEvents
| where Timestamp > ago(7d)
| where InitiatingProcessFolderPath contains @'\Siemens' 
   and (InitiatingProcessFolderPath contains 'Desigo' or InitiatingProcessFileName contains 'CCService')
| where FileName in~ ('cmd.exe', 'powershell.exe', 'pwsh.exe')
| project Timestamp, DeviceName, AccountName, InitiatingProcessCommandLine, CommandLine, FileName
| extend AlertDetails = 'Potential RCE via CVE-2025-15467'


**Velociraptor VQL**

-- Hunt for Desigo parent processes spawning suspicious children
SELECT Pid, Name, CommandLine, Exe, Username, Parent.Pid AS ParentPid, Parent.Name AS ParentName, Parent.Exe AS ParentExe
FROM pslist()
WHERE Parent.Name =~ 'CCService'
   AND (Name =~ 'cmd.exe' OR Name =~ 'powershell.exe' OR Name =~ 'wscript.exe')


**Remediation Script (PowerShell)**

# Check for vulnerable Desigo CC versions based on File Version
# Run on the Desigo CC Server

$RegistryPath = "HKLM:\SOFTWARE\Siemens\Desigo CC"
$InstalledPath = (Get-ItemProperty -Path $RegistryPath -ErrorAction SilentlyContinue).InstallationPath

if ($InstalledPath) {
    $ExePath = Join-Path -Path $InstalledPath -ChildPath "bin\CCService.exe"
    if (Test-Path $ExePath) {
        $FileInfo = Get-Item $ExePath
        $Version = $FileInfo.VersionInfo.FileVersion
        Write-Host "Detected Desigo CC Version: $Version"

        # Logic to check against vulnerable versions (Example parsing)
        # V7 and V8 are all vulnerable. V9 < 9.0.1 is vulnerable.
        # This requires robust version parsing logic in production.
        if ($Version -like "7.*" -or $Version -like "8.*" -or ($Version -like "9.*" -and [version]$Version -lt [version]"9.0.1.0")) {
            Write-Host "[ALERT] System is VULNERABLE to CVE-2025-15467. Immediate patching required." -ForegroundColor Red
        } else {
            Write-Host "[INFO] System appears patched or running a different version track." -ForegroundColor Green
        }
    }
} else {
    Write-Host "Desigo CC installation path not found in registry."
}