CVE-2025-1059
📋 TL;DR
A resource allocation vulnerability in Schneider Electric devices allows attackers to send malicious packets to the webserver, causing denial of service by halting communications. This affects Schneider Electric products with vulnerable webserver implementations. Organizations using these devices in industrial or critical infrastructure environments are at risk.
💻 Affected Systems
- Schneider Electric devices with vulnerable webserver implementations
⚠️ 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 loss of device communications leading to operational disruption, potential safety impacts in industrial environments, and extended downtime requiring physical intervention.
Likely Case
Temporary denial of service affecting device management and monitoring capabilities until malicious traffic stops or device is restarted.
If Mitigated
Minimal impact with proper network segmentation and traffic filtering preventing malicious packets from reaching vulnerable devices.
🎯 Exploit Status
Exploitation requires sending specially crafted packets to the webserver. No authentication required based on CWE-770 description.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to vendor advisory for specific fixed versions
Vendor Advisory: https://download.schneider-electric.com/files?p_Doc_Ref=sevd-2025-042-01&p_enDocType=Security+and+Safety+Notice&p_File_Name=SEVD-2025-042-01.pdf
Restart Required: Yes
Instructions:
1. Review Schneider Electric advisory SEVD-2025-042-01. 2. Identify affected products in your environment. 3. Apply vendor-provided firmware updates. 4. Restart devices after patching. 5. Verify communications are restored.
🔧 Temporary Workarounds
Network Segmentation
allIsolate vulnerable devices from untrusted networks to prevent malicious packet delivery
Webserver Access Control
allRestrict webserver access to authorized management networks only
🧯 If You Can't Patch
- Implement strict network ACLs to allow only trusted sources to communicate with device webservers
- Deploy intrusion prevention systems to detect and block malicious packet patterns targeting this vulnerability
🔍 How to Verify
Check if Vulnerable:
Check device model and firmware version against Schneider Electric advisory SEVD-2025-042-01Check Version:
Device-specific; typically via web interface or CLI commands like 'show version' or similarVerify Fix Applied:
Verify firmware version matches patched version in vendor advisory and test webserver functionality📡 Detection & Monitoring
Log Indicators:
- Unusual webserver traffic patterns
- Webserver process crashes or restarts
- Increased resource utilization alerts
Network Indicators:
- High volume of malformed HTTP/HTTPS packets to device ports
- Traffic patterns consistent with resource exhaustion attacks
SIEM Query:
source_ip=* AND dest_port IN (80,443,8080,8443) AND (packet_size>threshold OR malformed_packet=TRUE) AND dest_ip IN [vulnerable_device_ips]