CVE-2025-40666
📋 TL;DR
CVE-2025-40666 is a critical SQL injection vulnerability in TCMAN's GIM v11 that allows attackers to manipulate databases through the ArbolID parameter. Attackers can retrieve, create, update, and delete database content using time-based blind techniques. Organizations using TCMAN GIM v11 web applications are affected.
💻 Affected Systems
- TCMAN GIM
📦 What is this software?
Gim by Tcman
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including data theft, data destruction, privilege escalation, and potential full system takeover.
Likely Case
Data exfiltration, unauthorized data modification, and potential lateral movement within the database environment.
If Mitigated
Limited impact with proper input validation, WAF protection, and database permission restrictions.
🎯 Exploit Status
Time-based blind SQL injection requires no authentication and can be automated with tools like sqlmap.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-tcman-gim-0
Restart Required: No
Instructions:
1. Monitor vendor for patch release. 2. Apply patch when available. 3. Test in non-production environment first.
🔧 Temporary Workarounds
WAF Rule Implementation
allDeploy web application firewall rules to block SQL injection patterns targeting the ArbolID parameter.
Input Validation
allImplement server-side input validation to restrict ArbolID parameter to expected data types and ranges.
🧯 If You Can't Patch
- Block access to /GIMWeb/PC/frmPreventivosList.aspx at network perimeter
- Implement database user permission restrictions to limit damage from successful exploitation
🔍 How to Verify
Check if Vulnerable:
Test the ArbolID parameter with time-based SQL injection payloads using tools like sqlmap or manual testing.Check Version:
Check application version in web interface or configuration files.Verify Fix Applied:
Retest with SQL injection payloads after implementing fixes to confirm they are blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual database query patterns
- Multiple requests with SQL keywords in ArbolID parameter
- Time-delayed responses from frmPreventivosList.aspx
Network Indicators:
- SQL injection patterns in HTTP requests
- Unusual traffic to database ports from web server
SIEM Query:
source="web_logs" AND uri="/GIMWeb/PC/frmPreventivosList.aspx" AND (query CONTAINS "SLEEP" OR query CONTAINS "WAITFOR" OR query CONTAINS "BENCHMARK")