CVE-2022-46680
📋 TL;DR
CVE-2022-46680 is a cleartext transmission vulnerability in Schneider Electric products that allows attackers to intercept unencrypted network traffic containing sensitive information. This could lead to data disclosure, denial of service, or data modification. Organizations using affected Schneider Electric industrial control systems and software are at risk.
💻 Affected Systems
- Schneider Electric EcoStruxure Control Expert
- Schneider Electric EcoStruxure Process Expert
- Schneider Electric Modicon PLCs
📦 What is this software?
Powerlogic Ion7400 Firmware by Schneider Electric
Powerlogic Ion8650 Firmware by Schneider Electric
Powerlogic Ion8800 Firmware by Schneider Electric
Powerlogic Ion9000 Firmware by Schneider Electric
Powerlogic Pm8000 Firmware by Schneider Electric
⚠️ Risk & Real-World Impact
Worst Case
Attackers intercept and modify critical industrial control commands, causing physical damage, operational shutdown, or safety system compromise.
Likely Case
Sensitive operational data (credentials, configuration, process data) is intercepted, leading to information disclosure and potential follow-on attacks.
If Mitigated
With proper network segmentation and encryption, impact is limited to isolated network segments with minimal operational disruption.
🎯 Exploit Status
Exploitation requires network access to intercept traffic but doesn't require authentication to target systems.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific product versions
Vendor Advisory: https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2023-129-03&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2023-129-03.pdf
Restart Required: Yes
Instructions:
1. Download and apply vendor patches from Schneider Electric security portal. 2. Update affected software to patched versions. 3. Restart affected systems and verify communication.
🔧 Temporary Workarounds
Network Segmentation
allIsolate affected systems in separate VLANs with strict firewall rules limiting communication.
Enable Encryption
allConfigure affected products to use encrypted communication protocols instead of cleartext.
🧯 If You Can't Patch
- Implement network-level encryption (VPN, IPsec) for all communication with affected systems
- Deploy network monitoring and intrusion detection specifically for unencrypted industrial protocol traffic
🔍 How to Verify
Check if Vulnerable:
Check if affected Schneider Electric products are communicating using unencrypted protocols (Modbus TCP, OPC UA without encryption) on your network.Check Version:
Check product documentation for version verification commands specific to each Schneider Electric product.Verify Fix Applied:
Verify patched versions are installed and confirm encrypted communication is established between engineering stations and controllers.📡 Detection & Monitoring
Log Indicators:
- Failed encrypted handshake attempts
- Unexpected protocol downgrade events
- Multiple connection attempts from unknown sources
Network Indicators:
- Cleartext industrial protocol traffic (Modbus TCP, OPC UA without encryption) on unexpected ports
- Man-in-the-middle attack patterns in network traffic
SIEM Query:
source="network_traffic" AND (protocol="modbus" OR protocol="opcua") AND encryption="none"