CVE-2025-15102
📋 TL;DR
CVE-2025-15102 is a password protection bypass vulnerability in Delta Electronics DVP-12SE11T PLC modules. Attackers can bypass authentication mechanisms to gain unauthorized access to device configuration and control functions. Organizations using these industrial control system components are affected.
💻 Affected Systems
- Delta Electronics DVP-12SE11T
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of industrial control systems leading to production disruption, equipment damage, safety hazards, and potential physical consequences in critical infrastructure environments.
Likely Case
Unauthorized access to PLC programming and configuration, allowing attackers to modify control logic, disrupt operations, or establish persistence in industrial networks.
If Mitigated
Limited impact if devices are isolated in segmented networks with strict access controls, though authentication bypass still presents significant risk.
🎯 Exploit Status
Authentication bypass vulnerabilities in industrial devices are frequently weaponized due to their critical nature and potential for significant impact.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Refer to Delta advisory PCSA-2025-00022 for specific firmware version
Vendor Advisory: https://filecenter.deltaww.com/news/download/doc/Delta-PCSA-2025-00022_DVP-12SE11T%20Multiple%20Vulnerabilities.pdf
Restart Required: Yes
Instructions:
1. Download updated firmware from Delta Electronics support portal. 2. Backup current configuration. 3. Apply firmware update via programming software. 4. Verify functionality post-update. 5. Restart device if required by update process.
🔧 Temporary Workarounds
Network segmentation and access control
allIsolate PLC devices in dedicated industrial network segments with strict firewall rules limiting access to authorized engineering stations only.
Disable unnecessary network services
allDisable any network programming interfaces not required for normal operation through device configuration.
🧯 If You Can't Patch
- Implement strict network segmentation with industrial DMZ and allow-list only authorized engineering workstations
- Deploy network monitoring and intrusion detection specifically for industrial protocols with alerting for unauthorized access attempts
🔍 How to Verify
Check if Vulnerable:
Check device firmware version against Delta advisory PCSA-2025-00022. Attempt authentication bypass via documented methods if authorized for testing.Check Version:
Use Delta programming software (ISPSoft) to connect to device and check firmware version in device information panel.Verify Fix Applied:
Verify firmware version matches patched version from advisory. Test authentication mechanisms to confirm proper password protection.📡 Detection & Monitoring
Log Indicators:
- Failed authentication attempts followed by successful access
- Unauthorized configuration changes
- Access from unexpected IP addresses
Network Indicators:
- Industrial protocol traffic (Modbus, Ethernet/IP) from unauthorized sources
- Unexpected programming sessions to PLC devices
SIEM Query:
source="plc_logs" AND (event_type="auth_bypass" OR (auth_result="fail" AND auth_result="success" within 5s))