CVE-2025-61862
📋 TL;DR
An out-of-bounds read vulnerability in V-SFT v6.2.7.0 and earlier allows attackers to read memory beyond allocated buffers when processing specially crafted V-SFT files. This can lead to information disclosure, system crashes, or potentially arbitrary code execution. Organizations using V-SFT software for industrial control systems are primarily affected.
💻 Affected Systems
- V-SFT (Visual Sequence Function Table)
📦 What is this software?
Monitouch V Sft by Fujielectric
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data exfiltration, and potential disruption of industrial control processes.
Likely Case
System crashes (ABEND) and information disclosure from memory reads, potentially exposing sensitive data or system information.
If Mitigated
Limited information disclosure with no code execution if proper memory protections and file validation are in place.
🎯 Exploit Status
Requires user interaction to open malicious files; exploitation depends on memory layout and system configuration.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Fuji Electric advisory for specific patched version
Vendor Advisory: https://monitouch.fujielectric.com/site/download-e/09vsft6_inf/Search.php
Restart Required: Yes
Instructions:
1. Visit Fuji Electric's advisory page
2. Download the latest V-SFT version
3. Install the update following vendor instructions
4. Restart affected systems
🔧 Temporary Workarounds
Restrict V-SFT file processing
allLimit processing of V-SFT files to trusted sources only; implement file validation controls.
Application whitelisting
windowsUse application control solutions to restrict execution of V-SFT to authorized users and contexts.
🧯 If You Can't Patch
- Implement strict file upload validation and scanning for V-SFT files
- Isolate V-SFT systems in segmented network zones with limited external access
🔍 How to Verify
Check if Vulnerable:
Check V-SFT version against affected range (v6.2.7.0 or earlier)Check Version:
Check V-SFT 'About' dialog or installation propertiesVerify Fix Applied:
Verify installed version is newer than v6.2.7.0 and check vendor patch notes📡 Detection & Monitoring
Log Indicators:
- Application crashes with V-SFT process
- Unusual file processing activity
- Memory access violation errors
Network Indicators:
- Unexpected V-SFT file transfers
- File uploads to systems running V-SFT
SIEM Query:
Process:V-SFT.exe AND (EventID:1000 OR ExceptionCode:c0000005)