CVE-2025-47750

7.8 HIGH

📋 TL;DR

This vulnerability in V-SFT v6.2.5.0 and earlier allows attackers to execute arbitrary code by exploiting an out-of-bounds write when opening specially crafted V7 or V8 files. It affects users of Fuji Electric's V-SFT software who process untrusted files, potentially leading to complete system compromise.

💻 Affected Systems

Products:
  • Fuji Electric V-SFT
Versions: v6.2.5.0 and earlier
Operating Systems: Windows
Default Config Vulnerable: ⚠️ Yes
Notes: Only affects systems where V-SFT processes V7 or V8 files from untrusted sources.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Full system compromise with remote code execution, data theft, and persistent backdoor installation.

🟠

Likely Case

Application crash and potential information disclosure from memory corruption.

🟢

If Mitigated

Limited impact with proper file validation and restricted user privileges.

🌐 Internet-Facing: MEDIUM - Requires user interaction to open malicious files, but could be delivered via web or email.
🏢 Internal Only: HIGH - Internal users could be tricked into opening malicious files, leading to lateral movement.

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: MEDIUM

Exploitation requires user interaction to open malicious files. No public exploit code is available 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 website. 2. Install the update following vendor instructions. 3. Restart the system to ensure changes take effect.

🔧 Temporary Workarounds

Restrict File Processing

windows

Configure V-SFT to only process trusted V7/V8 files and implement file validation.

User Privilege Reduction

windows

Run V-SFT with limited user privileges to reduce impact of successful exploitation.

🧯 If You Can't Patch

  • Implement application whitelisting to prevent execution of unauthorized code.
  • Use network segmentation to isolate V-SFT systems from critical assets.

🔍 How to Verify

Check if Vulnerable:

Check V-SFT version in Help > About menu. If version is 6.2.5.0 or earlier, system is vulnerable.

Check Version:

Check Help > About in V-SFT application interface.

Verify Fix Applied:

Verify version is 6.2.5.1 or later after applying the patch.

📡 Detection & Monitoring

Log Indicators:

  • Application crashes in V-SFT with memory access violations
  • Unexpected file processing events

Network Indicators:

  • Unusual outbound connections from V-SFT process

SIEM Query:

EventID=1000 OR EventID=1001 SourceName='Application Error' ProcessName='V-SFT.exe'

🔗 References

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