CVE-2022-30538
📋 TL;DR
An out-of-bounds write vulnerability in the simulator module of Fuji Electric's V-SFT graphic editor versions prior to v6.1.6.0 allows attackers to execute arbitrary code or obtain information by tricking users into opening malicious image files. This affects industrial control system operators and engineers using V-SFT for HMI/SCADA configuration.
💻 Affected Systems
- Fuji Electric V-SFT graphic editor
📦 What is this software?
Monitouch V Sft by Fujielectric
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with remote code execution leading to industrial process disruption, data theft, or ransomware deployment in critical infrastructure environments.
Likely Case
Local privilege escalation or system compromise on engineering workstations, potentially enabling lateral movement within industrial networks.
If Mitigated
Limited impact if proper network segmentation and least privilege principles are implemented, with only isolated workstation compromise.
🎯 Exploit Status
Requires social engineering to get user to open malicious file. No public exploit code identified in references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v6.1.6.0
Vendor Advisory: https://monitouch.fujielectric.com/site/download-e/09vsft6_inf/Search.php
Restart Required: Yes
Instructions:
1. Download V-SFT v6.1.6.0 or later from Fuji Electric's website. 2. Install the update following vendor instructions. 3. Restart the system to ensure changes take effect.
🔧 Temporary Workarounds
Restrict file execution
windowsBlock execution of V-SFT from untrusted locations and restrict image file handling
Use Windows AppLocker or similar to restrict V-SFT execution to trusted directories
User awareness training
allTrain users not to open image files from untrusted sources in V-SFT
🧯 If You Can't Patch
- Implement strict network segmentation to isolate V-SFT workstations from critical control systems
- Apply principle of least privilege and disable unnecessary services on affected workstations
🔍 How to Verify
Check if Vulnerable:
Check V-SFT version in Help > About menu. If version is below 6.1.6.0, system is vulnerable.Check Version:
Check V-SFT GUI: Help > About menuVerify Fix Applied:
Verify version shows 6.1.6.0 or higher in Help > About menu after update.📡 Detection & Monitoring
Log Indicators:
- Unexpected process crashes of V-SFT.exe
- Unusual file access patterns from V-SFT to image files
Network Indicators:
- Unusual outbound connections from engineering workstations running V-SFT
SIEM Query:
Process:V-SFT.exe AND (EventID:1000 OR EventID:1001) OR FileAccess:*.jpg,*.png,*.bmp FROM V-SFT.exe