CVE-2025-14850
📋 TL;DR
Advantech WebAccess/SCADA is vulnerable to directory traversal that allows attackers to delete arbitrary files on the system. This affects industrial control systems using Advantech's SCADA software, potentially disrupting critical operations.
💻 Affected Systems
- Advantech WebAccess/SCADA
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through deletion of critical system files, leading to SCADA system failure and operational disruption in industrial environments.
Likely Case
Targeted deletion of configuration files, logs, or application data causing service disruption and potential data loss.
If Mitigated
Limited impact with proper network segmentation and file permission controls preventing access to critical system areas.
🎯 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 as administrator. 4. Restart system after installation completes.
🔧 Temporary Workarounds
Network Segmentation
allIsolate SCADA systems from untrusted networks and internet access
File Permission Restrictions
windowsApply strict file permissions to limit WebAccess service account access
icacls C:\WebAccess /deny WebAccessUser:(OI)(CI)(DE)
🧯 If You Can't Patch
- Implement strict network access controls to limit connections to SCADA systems
- Deploy application whitelisting to prevent unauthorized file deletion operations
🔍 How to Verify
Check if Vulnerable:
Check WebAccess/SCADA version in Control Panel > Programs and FeaturesCheck Version:
wmic product where name="Advantech WebAccess" get versionVerify Fix Applied:
Verify version shows 9.1.5 or higher after patch installation📡 Detection & Monitoring
Log Indicators:
- Unusual file deletion events in Windows Event Logs
- WebAccess logs showing directory traversal patterns
Network Indicators:
- HTTP requests containing ../ patterns to WebAccess endpoints
- Unusual file deletion requests to SCADA web interface
SIEM Query:
source="windows_security" EventID=4663 ObjectType="File" AccessMask="0x10000" | where ObjectName contains ".."