CVE-2025-22882
📋 TL;DR
Delta Electronics ISPSoft version 3.20 contains a stack-based buffer overflow vulnerability when parsing CBDGL files. This allows attackers to execute arbitrary code on systems running the vulnerable software, potentially compromising industrial control systems. Organizations using Delta Electronics PLC programming software are affected.
💻 Affected Systems
- Delta Electronics ISPSoft
📦 What is this software?
Ispsoft by Deltaww
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing remote code execution, potential lateral movement to industrial control networks, and disruption of critical industrial processes.
Likely Case
Local privilege escalation or code execution on engineering workstations, potentially leading to manipulation of PLC programs or data exfiltration.
If Mitigated
Limited impact if proper network segmentation and application whitelisting are implemented, restricting file parsing to trusted sources only.
🎯 Exploit Status
Exploitation requires the attacker to craft a malicious CBDGL file and convince a user to open it, or place it where ISPSoft will process it automatically.
🛠️ 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 official website. 2. Uninstall current version 3.20. 3. Install the updated version. 4. Restart the system.
🔧 Temporary Workarounds
Restrict CBDGL file processing
windowsBlock or restrict processing of .cbdgl files through application control policies
User awareness training
allTrain engineers to only open CBDGL files from trusted sources
🧯 If You Can't Patch
- Implement strict network segmentation to isolate engineering workstations from production networks
- Deploy application whitelisting to prevent execution of unauthorized code even if exploitation occurs
🔍 How to Verify
Check if Vulnerable:
Check ISPSoft version via Help > About in the application interface. If version is 3.20, the system is vulnerable.Check Version:
Not applicable - check via application GUI Help > About menuVerify Fix Applied:
After updating, verify version shows 3.21 or later in Help > About. Test with known safe CBDGL files to ensure functionality.📡 Detection & Monitoring
Log Indicators:
- Unexpected process crashes of ISPSoft.exe
- Creation or modification of unusual CBDGL files
- Unusual network connections from engineering workstations
Network Indicators:
- Unexpected file transfers to engineering workstations
- Anomalous SMB or file sharing activity involving CBDGL files
SIEM Query:
source="windows" AND process="ISPSoft.exe" AND (event_id=1000 OR event_id=1001) OR file_extension=".cbdgl" AND file_creation