CVE-2025-67653
📋 TL;DR
Advantech WebAccess/SCADA is vulnerable to directory traversal (CWE-22), allowing attackers to check if arbitrary files exist on the system. This affects organizations using Advantech's industrial control system software for monitoring and control operations.
💻 Affected Systems
- Advantech WebAccess/SCADA
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could map the file system structure, identify sensitive configuration files, and potentially combine with other vulnerabilities for further exploitation.
Likely Case
Information disclosure about file system structure, potentially revealing configuration files, credentials, or system information.
If Mitigated
Limited impact with proper network segmentation and access controls preventing external access to vulnerable interfaces.
🎯 Exploit Status
Directory traversal vulnerabilities typically have low exploitation complexity and can be exploited with simple HTTP requests.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 9.1.5
Vendor Advisory: https://www.advantech.com/en-us/support/details/installation?id=1-MS9MJV
Restart Required: Yes
Instructions:
1. Download patch from Advantech support portal. 2. Backup current installation. 3. Run installer with administrative privileges. 4. Restart system and verify version.
🔧 Temporary Workarounds
Network Segmentation
allIsolate SCADA systems from untrusted networks
Access Control Lists
allRestrict access to WebAccess/SCADA web interface
🧯 If You Can't Patch
- Implement strict network segmentation to isolate SCADA systems
- Deploy web application firewall with directory traversal protection rules
🔍 How to Verify
Check if Vulnerable:
Check WebAccess/SCADA version in application interface or installation directoryCheck Version:
Check Help > About in WebAccess/SCADA interfaceVerify Fix Applied:
Verify version shows 9.1.5 or higher in application interface📡 Detection & Monitoring
Log Indicators:
- HTTP requests with ../ patterns
- Unusual file path access attempts
Network Indicators:
- HTTP requests containing directory traversal sequences to SCADA web interface
SIEM Query:
source="webaccess_logs" AND (uri="*../*" OR uri="*..\\*")