CVE-2023-5391
📋 TL;DR
This vulnerability allows remote code execution through deserialization of untrusted data in Schneider Electric products. Attackers can send specially crafted packets to execute arbitrary code on affected systems. Organizations using vulnerable Schneider Electric products are at risk.
💻 Affected Systems
- Schneider Electric products (specific models not detailed in provided references)
📦 What is this software?
Ecostruxure Power Monitoring Expert by Schneider Electric
View all CVEs affecting Ecostruxure Power Monitoring Expert →
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise leading to data theft, ransomware deployment, or disruption of industrial operations
Likely Case
Unauthorized access to industrial control systems, data exfiltration, or lateral movement within OT networks
If Mitigated
Limited impact if network segmentation and proper access controls prevent exploitation attempts
🎯 Exploit Status
CVSS 9.8 indicates critical severity with low attack complexity. No authentication required for exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified - check vendor advisory for specific versions
Vendor Advisory: https://download.schneider-electric.com/files?p_Doc_Ref=SEVD-2023-283-02&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2023-283-02.pdf
Restart Required: Yes
Instructions:
1. Download and review Schneider Electric security advisory SEVD-2023-283-02. 2. Identify affected products in your environment. 3. Apply vendor-provided patches or firmware updates. 4. Restart affected systems as required. 5. Verify patch installation.
🔧 Temporary Workarounds
Network Segmentation
allIsolate affected systems from untrusted networks and implement strict firewall rules
Access Control Lists
allRestrict network access to only trusted IP addresses and required protocols
🧯 If You Can't Patch
- Implement strict network segmentation to isolate vulnerable systems
- Deploy intrusion detection systems to monitor for exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check product versions against Schneider Electric advisory SEVD-2023-283-02Check Version:
Product-specific - consult device documentation or web interfaceVerify Fix Applied:
Verify installed firmware/software version matches patched version in vendor advisory📡 Detection & Monitoring
Log Indicators:
- Unusual network connections to affected systems
- Unexpected process execution
- System crashes or abnormal behavior
Network Indicators:
- Malformed packets sent to Schneider Electric product ports
- Unexpected protocol traffic to industrial systems
SIEM Query:
source_ip IN (industrial_systems) AND (protocol_anomaly OR malformed_packet)