CVE-2025-11782
📋 TL;DR
A stack-based buffer overflow vulnerability in Circutor SGE-PLC1000/SGE-PLC50 allows remote code execution by sending an overly long 'meter' parameter. This affects industrial control systems using these specific PLC devices, potentially compromising critical infrastructure operations.
💻 Affected Systems
- Circutor SGE-PLC1000
- Circutor SGE-PLC50
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise leading to remote code execution, device takeover, and potential disruption of industrial processes or safety systems.
Likely Case
Remote code execution allowing attackers to manipulate PLC logic, disrupt operations, or pivot to other industrial network systems.
If Mitigated
Denial of service or limited impact if network segmentation and access controls prevent exploitation attempts.
🎯 Exploit Status
The vulnerability is straightforward to exploit due to lack of input validation and buffer size checking.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: https://www.incibe.es/en/incibe-cert/notices/aviso-sci/multiple-vulnerabilities-circutor-products-0
Restart Required: No
Instructions:
No official patch available. Monitor vendor website for firmware updates. Consider workarounds and mitigation strategies.
🔧 Temporary Workarounds
Network Segmentation
allIsolate affected PLC devices in separate network segments with strict firewall rules.
Access Control
allRestrict network access to PLC web interfaces using IP whitelisting and authentication.
🧯 If You Can't Patch
- Implement network monitoring and intrusion detection for abnormal traffic to PLC devices
- Consider replacing vulnerable devices with patched alternatives if available
🔍 How to Verify
Check if Vulnerable:
Check device firmware version via web interface or serial console. Version 9.0.2 is vulnerable.Check Version:
Check via web interface at http://[device-ip]/status or serial console commands specific to device model.Verify Fix Applied:
Verify firmware version has been updated beyond 9.0.2 when patch becomes available.📡 Detection & Monitoring
Log Indicators:
- Unusually long HTTP requests to PLC web interface
- Multiple failed connection attempts to PLC ports
Network Indicators:
- HTTP requests with meter parameter exceeding normal length
- Traffic to PLC web interface from unexpected sources
SIEM Query:
source_ip:* dest_ip:[PLC_IP] http.uri:*meter* AND http.request_length>100