CVE-2025-47758
📋 TL;DR
A stack-based buffer overflow vulnerability in V-SFT v6.2.5.0 and earlier allows attackers to execute arbitrary code by tricking users into opening specially crafted V7 or V8 files. This affects all users of vulnerable V-SFT versions and can lead to complete system compromise. The vulnerability is triggered through normal file opening operations.
💻 Affected Systems
- V-SFT
📦 What is this software?
Monitouch V Sft by Fujielectric
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining complete control over the affected system, enabling data theft, lateral movement, and persistent backdoor installation.
Likely Case
Application crash leading to denial of service, with potential for information disclosure through memory dumps and possible remote code execution in targeted attacks.
If Mitigated
Application crash without code execution if exploit fails or memory protections are effective, but still causing service disruption.
🎯 Exploit Status
Exploitation requires user interaction to open malicious files. No public exploit code has been identified at this time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v6.2.5.1 or later
Vendor Advisory: https://monitouch.fujielectric.com/site/download-e/09vsft6_inf/Search.php
Restart Required: Yes
Instructions:
1. Download the latest version from Fuji Electric's official website. 2. Uninstall the current vulnerable version. 3. Install the patched version. 4. Restart the system to ensure all components are updated.
🔧 Temporary Workarounds
Restrict File Access
windowsBlock opening of V7 and V8 files from untrusted sources
Application Control
windowsUse application whitelisting to restrict V-SFT execution to trusted locations only
🧯 If You Can't Patch
- Implement strict file validation policies to block suspicious V7/V8 files
- Isolate V-SFT systems from critical network segments and implement network segmentation
🔍 How to Verify
Check if Vulnerable:
Check V-SFT version in Help > About menu. If version is 6.2.5.0 or earlier, the system is vulnerable.Check Version:
Check Help > About menu in V-SFT applicationVerify Fix Applied:
Verify version is 6.2.5.1 or later in Help > About menu and test opening known safe V7/V8 files.📡 Detection & Monitoring
Log Indicators:
- Application crash logs from V-SFT
- Memory access violation errors in Windows Event Logs
- Unexpected process termination of VS6File.exe
Network Indicators:
- Unusual outbound connections from V-SFT process
- File transfers of V7/V8 files from untrusted sources
SIEM Query:
EventID=1000 OR EventID=1001 AND ProcessName="VS6File.exe" OR Application="V-SFT"