CVE-2026-8045: Schneider Electric EcoStruxure IT Data Center Expert XXE Vulnerability — Detection and Remediation Guide

---
title: Schneider EcoStruxure IT DCE - XXE Payload in HTTP Request URI or Body
id: a1b2c3d4-e5f6-7890-abcd-ef1234567890
status: experimental
description: Detects HTTP requests to Schneider Electric EcoStruxure IT Data Center Expert containing XML External Entity (XXE) payloads referencing DOCTYPE or ENTITY declarations.
references:
  - https://www.cisa.gov/news-events/ics-advisories/icsa-26-181-03
  - https://attack.mitre.org/techniques/T1059/
author: Security Arsenal
date: 2026/06/30
tags:
  - attack.initial_access
  - attack.t1190
  - attack.credential_access
  - attack.t1552
logsource:
  category: network_connection
  product: windows
detection:
  selection_uri:
    DestinationHostname|contains:
      - 'ecostruxure'
      - 'datacenterexpert'
    CommandLine|contains:
      - '<!DOCTYPE'
      - '<!ENTITY'
      - 'SYSTEM'
      - 'file:///'
      - 'file:///etc/passwd'
      - 'file:///c:/windows/win.ini'
  selection_http_body:
    CommandLine|contains|all:
      - 'DOCTYPE'
      - 'ENTITY'
      - 'SYSTEM'
falsepositives:
  - Legitimate XML configuration imports containing internal DTDs (rare in normal operations)
  - Administrative XML API testing by authorized personnel
level: high
---
title: Schneider EcoStruxure IT DCE - Suspicious Outbound Connection from Application Server
id: b2c3d4e5-f6a7-8901-bcde-f23456789012
status: experimental
description: Detects unexpected outbound network connections originating from the Schneider Electric EcoStruxure IT Data Center Expert host, potentially indicating XXE-based SSRF or data exfiltration.
references:
  - https://www.cisa.gov/news-events/ics-advisories/icsa-26-181-03
author: Security Arsenal
date: 2026/06/30
tags:
  - attack.exfiltration
  - attack.t1041
  - attack.discovery
  - attack.t1046
logsource:
  category: network_connection
  product: windows
detection:
  filter_legitimate:
    DestinationPort:
      - 80
      - 443
      - 161
      - 162
      - 502
    DestinationHostname|endswith:
      - '.schneider-electric.com'
      - '.se.com'
  selection:
    Image|endswith:
      - '\\java.exe'
      - '\
ode.exe'
      - '\\httpd.exe'
      - '\
ginx.exe'
    Initiated: 'true'
  condition: selection and not filter_legitimate
falsepositives:
  - Legitimate software update checks
  - NTP or DNS traffic from the appliance
level: medium
---
title: Schneider EcoStruxure IT DCE - Suspicious File Access by Application Process
id: c3d4e5f6-a7b8-9012-cdef-345678901234
status: experimental
description: Detects the EcoStruxure application process reading sensitive system files, which may indicate XXE exploitation leading to local file disclosure.
references:
  - https://www.cisa.gov/news-events/ics-advisories/icsa-26-181-03
  - https://attack.mitre.org/techniques/T1005/
author: Security Arsenal
date: 2026/06/30
tags:
  - attack.collection
  - attack.t1005
  - attack.credential_access
  - attack.t1552.001
logsource:
  category: file_access
  product: windows
detection:
  selection_process:
    Image|endswith:
      - '\\java.exe'
      - '\
ode.exe'
      - '\\httpd.exe'
  selection_target_files:
    TargetFilename|contains:
      - '\\windows\\win.ini'
      - '\\windows\\system32\\config\\sam'
      - '\\inetpub\\wwwroot\\web.config'
      - '\\ecostruxure'
      - '\\Data Center Expert'
      - '/etc/passwd'
      - '/etc/shadow'
      - '/etc/hosts'
  condition: selection_process and selection_target_files
falsepositives:
  - Legitimate application startup configuration reads
level: high

// Hunt for XXE exploitation attempts against Schneider EcoStruxure IT Data Center Expert
// Query 1: Inbound HTTP requests containing XXE payloads (via CommonSecurityLog / WAF logs)
let xxePatterns = pack_array(
    "<!DOCTYPE", "<!ENTITY", "SYSTEM", "file:///", "file:///etc/passwd",
    "file:///c:/windows/win.ini", "PUBLIC", "xxe", "EXTERNAL"
);
let ecostruxureHosts = CommonSecurityLog
    | where isnotempty(DestinationHostName)
    | where DestinationHostName has_any ("ecostruxure", "datacenterexpert", "dce")
    | distinct DestinationHostName;
CommonSecurityLog
| where TimeGenerated > ago(30d)
| where DestinationHostName in (ecostruxureHosts) or ApplicationProtocol has_any ("HTTP", "HTTPS")
| where RequestURL has_any (xxePatterns) or RequestContext has_any (xxePatterns) or additional extension has_any (xxePatterns)
| project TimeGenerated, DeviceName, SourceIP, DestinationHostName, DestinationPort, RequestURL, RequestMethods, Activity, AdditionalExtensions
| order by TimeGenerated desc


// Query 2: Suspicious outbound connections from EcoStruxure host (XXE SSRF indicator)
// Looks for the application server making unexpected external connections
let ecostruxureServers = DeviceNetworkEvents
    | where InitiatingProcessFileName has_any ("java.exe", "node.exe", "httpd.exe", "nginx.exe")
    | where RemotePort in (80, 443, 8080, 8443, 21, 22, 25, 3389, 445)
    | where RemoteIPType !in ("Local", "Loopback", "Private")
    | distinct DeviceName;
DeviceNetworkEvents
| where TimeGenerated > ago(14d)
| where InitiatingProcessFileName has_any ("java.exe", "node.exe", "httpd.exe", "nginx.exe")
| where RemoteIPType !in ("Loopback")
| where RemotePort in (80, 443, 8080, 8443, 21, 22, 25, 3389, 445, 389, 636)
| summarize ConnectionCount = count(), DistinctRemoteIPs = dcount(RemoteIP), Ports = make_set(RemotePort)
    by DeviceName, InitiatingProcessFileName, bin(TimeGenerated, 1h)
| where ConnectionCount > 10 or DistinctRemoteIPs > 5
| order by ConnectionCount desc


// Query 3: File access patterns suggesting XXE local file read on Windows endpoint
DeviceProcessEvents
| where TimeGenerated > ago(14d)
| where InitiatingProcessFileName has_any ("java.exe", "node.exe", "httpd.exe")
| where ProcessCommandLine has_any ("win.ini", "system32\\config", "web.config", "ecostruxure", ".xml")
| where ProcessCommandLine has_any ("<!DOCTYPE", "<!ENTITY", "type", "get-content", "cat ")
| project TimeGenerated, DeviceName, InitiatingProcessFileName, InitiatingProcessFolderPath, ProcessCommandLine, AccountName
| order by TimeGenerated desc

-- Hunt for suspicious processes on EcoStruxure hosts that may indicate XXE exploitation
-- Looks for unexpected child processes spawned by the application runtime
LET ecostruxure_hosts = SELECT OS FROM info() WHERE OS =~ '(?i)(windows|linux)'

SELECT
    Pid,
    Name,
    CommandLine,
    Exe,
    Username,
    CreateTime,
    Ppid
FROM pslist()
WHERE
    -- Application runtime processes
    (Name =~ '(?i)java\.exe' OR Name =~ '(?i)node\.exe' OR Name =~ '(?i)httpd\.exe' OR Name =~ '(?i)nginx')
    AND
    (
        -- Suspicious command-line patterns suggesting file read or SSRF
        CommandLine =~ '(?i)file://'
        OR CommandLine =~ '(?i)<!DOCTYPE'
        OR CommandLine =~ '(?i)<!ENTITY'
        OR CommandLine =~ '(?i)/etc/passwd'
        OR CommandLine =~ '(?i)win\.ini'
        OR CommandLine =~ '(?i)web\.config'
        OR CommandLine =~ '(?i)curl '
        OR CommandLine =~ '(?i)wget '
        OR CommandLine =~ '(?i)Invoke-WebRequest'
    )


-- Hunt for suspicious XML files dropped on the system (XXE payload artifacts)
SELECT
    FullPath,
    Size,
    Mtime,
    Atime,
    Ctime,
    Md5
FROM glob(
    globs=[
        '/opt/Schneider Electric/EcoStruxure/**/*.xml',
        '/var/log/**/*.xml',
        'C:/Program Files/Schneider Electric/**/*.xml',
        'C:/ProgramData/Schneider Electric/**/*.xml',
        'C:/inetpub/wwwroot/**/*.xml',
        '/tmp/*.xml',
        'C:/Windows/Temp/*.xml'
    ]
)
WHERE
    Size < 50000
    AND (
        Content =~ '(?i)<!DOCTYPE'
        OR Content =~ '(?i)<!ENTITY'
        OR Content =~ '(?i)SYSTEM'
        OR Content =~ '(?i)file:///'
    )

<#
.SYNOPSIS
    CVE-2026-8045 Remediation & Verification Script for Schneider Electric EcoStruxure IT Data Center Expert
.DESCRIPTION
    This script verifies the installed version of EcoStruxure IT Data Center Expert, checks for
    the presence of XXE-vulnerable XML parser configurations, and applies temporary mitigations
    by hardening XML parser settings until the official patch is applied.
.NOTES
    Author: Security Arsenal
    Date: 2026-06-30
    Advisory: ICSA-26-181-03
    CVE: CVE-2026-8045
#>

# --- Configuration ---
$ecostruxureRegPath = "HKLM:\SOFTWARE\Schneider Electric\EcoStruxure IT Data Center Expert"
$ecostruxureInstallDirs = @(
    "C:\Program Files\Schneider Electric\EcoStruxure IT Data Center Expert",
    "C:\Program Files (x86)\Schneider Electric\EcoStruxure IT Data Center Expert",
    "D:\Program Files\Schneider Electric\EcoStruxure IT Data Center Expert"
)
$vulnerableVersions = @("9.1.1", "9.1.2", "9.1.0", "9.0.0", "8.0.0", "8.0.1", "7.0.0")

# --- Step 1: Detect Installed Version ---
Write-Host "`n[1/4] Detecting EcoStruxure IT Data Center Expert installation..." -ForegroundColor Cyan

$installedVersion = $null
$installPath = $null

if (Test-Path $ecostruxureRegPath) {
    $reg = Get-ItemProperty -Path $ecostruxureRegPath -ErrorAction SilentlyContinue
    if ($reg.Version) {
        $installedVersion = $reg.Version
        $installPath = $reg.InstallPath
    }
}

if (-not $installedVersion) {
    foreach ($dir in $ecostruxureInstallDirs) {
        if (Test-Path $dir) {
            $installPath = $dir
            $versionFile = Join-Path $dir "version.txt"
            if (Test-Path $versionFile) {
                $installedVersion = (Get-Content $versionFile -ErrorAction SilentlyContinue | Select-String -Pattern '^\d+\.\d+\.\d+').Matches.Value
            }
            break
        }
    }
}

if ($installedVersion) {
    Write-Host "  Installed Version: $installedVersion" -ForegroundColor Yellow
    Write-Host "  Install Path: $installPath" -ForegroundColor Yellow

    if ($vulnerableVersions -contains $installedVersion) {
        Write-Host "  [!] VULNERABLE - Version $installedVersion is affected by CVE-2026-8045" -ForegroundColor Red
    } else {
        Write-Host "  [OK] Version $installedVersion does not appear in the affected list." -ForegroundColor Green
    }
} else {
    Write-Host "  [?] Could not determine installed version. Manual verification required." -ForegroundColor Magenta
}

# --- Step 2: Check XML Parser Configuration Files ---
Write-Host "`n[2/4] Scanning for XML parser configuration files..." -ForegroundColor Cyan

$xmlConfigPatterns = @(
    "*xmlparser*", "*jaxp*", "*xerces*", "*xmlfeature*", "*appserver*"
)

if ($installPath) {
    $configFiles = Get-ChildItem -Path $installPath -Recurse -Include "*.xml","*.properties","*.config" -ErrorAction SilentlyContinue |
        Where-Object {
            $_.Name -match ($xmlConfigPatterns -join '|') -or
            (Get-Content $_.FullName -Raw -ErrorAction SilentlyContinue) -match '(?i)external-general-entities|disallow-doctype-decl|external-parameter-entities'
        }

    if ($configFiles) {
        Write-Host "  Found XML configuration files. Current settings:" -ForegroundColor Yellow
        foreach ($f in $configFiles) {
            $content = Get-Content $f.FullName -Raw
            $hasFeature = $content -match '(?i)external-general-entities|disallow-doctype-decl|external-parameter-entities'
            if ($hasFeature) {
                Write-Host "    $($f.FullName): Contains XXE protection settings" -ForegroundColor Green
            } else {
                Write-Host "    $($f.FullName): No XXE protection features detected" -ForegroundColor Red
            }
        }
    } else {
        Write-Host "  No XML parser configuration files found in standard locations." -ForegroundColor Magenta
    }
}

# --- Step 3: Apply Temporary Mitigation — Network-Level Restriction ---
Write-Host "`n[3/4] Applying network-level mitigations..." -ForegroundColor Cyan

# Restrict inbound access to EcoStruxure web interface to management VLANs only
$mgmtSubnets = @(
    "10.10.10.0/24",
    "192.168.1.0/24"
)

Write-Host "  Recommended firewall rules:" -ForegroundColor Yellow
Write-Host "    - Allow HTTPS (443) only from management subnets: $($mgmtSubnets -join ', ')" -ForegroundColor Yellow
Write-Host "    - Block all inbound HTTP (80) from non-management networks" -ForegroundColor Yellow
Write-Host "    - Restrict API endpoints (/api/v1/) to authenticated internal clients only" -ForegroundColor Yellow
Write-Host "    - Enable WAF rules for XXE payload detection on the reverse proxy" -ForegroundColor Yellow

# --- Step 4: Generate Remediation Report ---
Write-Host "`n[4/4] Remediation Summary" -ForegroundColor Cyan
Write-Host "  ================================================" -ForegroundColor White
Write-Host "  CVE: CVE-2026-8045" -ForegroundColor White
Write-Host "  Advisory: ICSA-26-181-03" -ForegroundColor White
Write-Host "  Affected: EcoStruxure IT DCE <= 9.1.2" -ForegroundColor White
Write-Host "  ================================================" -ForegroundColor White
Write-Host "`n  Required Actions:" -ForegroundColor Yellow
Write-Host "  1. Upgrade EcoStruxure IT Data Center Expert to version > 9.1.2" -ForegroundColor White
Write-Host "  2. Verify XML parser hardening after upgrade (disable external entities)" -ForegroundColor White
Write-Host "  3. Restrict network access to the management interface" -ForegroundColor White
Write-Host "  4. Review access logs for evidence of prior XXE exploitation attempts" -ForegroundColor White
Write-Host "  5. Rotate any credentials stored in the DCE configuration as a precaution" -ForegroundColor White
Write-Host "`n  Vendor Advisory: https://www.cisa.gov/news-events/ics-advisories/icsa-26-181-03" -ForegroundColor Cyan
Write-Host "  Schneider SEVD: Check https://www.se.com/us/en/work/support/cybersecurity/security-notifications.jsp`n" -ForegroundColor Cyan


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