CVE-2025-22884
📋 TL;DR
Delta Electronics ISPSoft version 3.20 contains a stack-based buffer overflow vulnerability when parsing DVP files. This allows attackers to execute arbitrary code on systems running the vulnerable software. Organizations using ISPSoft for industrial control system programming are affected.
💻 Affected Systems
- Delta Electronics ISPSoft
📦 What is this software?
Ispsoft by Deltaww
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise allowing attacker to execute arbitrary code with application privileges, potentially leading to industrial control system manipulation, data theft, or ransomware deployment.
Likely Case
Remote code execution leading to industrial network compromise, PLC program modification, or denial of service affecting manufacturing processes.
If Mitigated
Limited impact due to network segmentation and restricted file access, potentially resulting only in application crash.
🎯 Exploit Status
Exploitation requires the victim to open a malicious DVP file. No authentication bypass is needed once the file is opened.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 3.21 or later
Vendor Advisory: https://filecenter.deltaww.com/news/download/doc/Delta-PCSA-2025-00004_ISPSoft%20-%20Multiple%20Vulnerabilities_v2.pdf
Restart Required: Yes
Instructions:
1. Download ISPSoft version 3.21 or later from Delta Electronics website. 2. Uninstall current version 3.20. 3. Install the updated version. 4. Restart the system.
🔧 Temporary Workarounds
Restrict DVP file handling
windowsConfigure Windows to open DVP files with a text editor instead of ISPSoft by default
Right-click DVP file > Open with > Choose another app > Select Notepad > Check 'Always use this app'
Application control policy
windowsUse Windows AppLocker or similar to restrict execution of ISPSoft to authorized users only
🧯 If You Can't Patch
- Segment industrial control network from corporate network to limit attack surface
- Implement strict file validation procedures for all DVP files before opening in ISPSoft
🔍 How to Verify
Check if Vulnerable:
Check ISPSoft version via Help > About in the application interfaceCheck Version:
No command line option available. Must check through application GUI.Verify Fix Applied:
Verify version is 3.21 or higher in Help > About menu📡 Detection & Monitoring
Log Indicators:
- Application crashes of ISPSoft.exe
- Unusual process creation from ISPSoft
- Multiple failed file parsing attempts
Network Indicators:
- Unexpected DVP file transfers to engineering workstations
- Network connections from ISPSoft to unusual external IPs
SIEM Query:
source="windows" AND (process_name="ISPSoft.exe" AND (event_id=1000 OR event_id=1001)) OR (file_name="*.dvp" AND user="*engineer*")