CVE-2025-53524
📋 TL;DR
Fuji Electric Monitouch V-SFT-6 software is vulnerable to an out-of-bounds write when processing specially crafted project files, which could allow attackers to execute arbitrary code on affected systems. This affects organizations using this industrial control system (ICS) software for HMI/SCADA applications. The vulnerability requires an attacker to trick a user into opening a malicious project file.
💻 Affected Systems
- Fuji Electric Monitouch V-SFT-6
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with arbitrary code execution leading to disruption of industrial processes, data theft, or ransomware deployment on ICS networks.
Likely Case
Local privilege escalation or system compromise when a user opens a malicious project file, potentially leading to lateral movement within OT networks.
If Mitigated
Limited impact if proper network segmentation, least privilege, and file validation controls are implemented.
🎯 Exploit Status
Exploitation requires social engineering or internal access to deliver malicious project files. No public exploit code is currently available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in available references - check vendor advisory for specific version
Restart Required: Yes
Instructions:
1. Check the Fuji Electric advisory for the specific patched version. 2. Download the update from Fuji Electric's official portal. 3. Install the update following vendor instructions. 4. Restart the system as required.
🔧 Temporary Workarounds
Restrict Project File Sources
allOnly open project files from trusted sources and implement file validation procedures.
Application Whitelisting
windowsImplement application whitelisting to prevent unauthorized execution of modified V-SFT-6 binaries.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate V-SFT-6 systems from untrusted networks
- Train users to never open project files from untrusted sources and implement file hash verification procedures
🔍 How to Verify
Check if Vulnerable:
Check the installed version of Monitouch V-SFT-6 against the patched version specified in Fuji Electric's advisory.Check Version:
Check version through V-SFT-6 Help > About menu or Windows Programs and FeaturesVerify Fix Applied:
Verify the software version matches or exceeds the patched version listed in the vendor advisory.📡 Detection & Monitoring
Log Indicators:
- Unexpected process crashes of V-SFT-6.exe
- Suspicious file access to project files from unusual locations
Network Indicators:
- Unusual network connections from V-SFT-6 systems
- File transfers of project files to/from untrusted sources
SIEM Query:
Process:V-SFT-6.exe AND (EventID:1000 OR EventID:1001) OR FileAccess:*.vsf AND SourceIP:External🔗 References
- https://felib.fujielectric.co.jp/en/document_search?tab=software&document1%5B1%5D=M10009&document2%5B1%5D=M20104&product1%5B1%5D=P10003&product2%5B1%5D=P20023&product3%5B1%5D=P30623&product4%5B1%5D=S11133&discontinued%5B1%5D=0&count=20&sort=en_title&page=1®ion=en-glb
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2025/icsa-25-308-01.json
- https://www.cisa.gov/news-events/ics-advisories/icsa-25-308-01
