CVE-2025-48019
📋 TL;DR
A vulnerability in Yokogawa's Vnet/IP Interface Package allows remote attackers to cause denial of service by sending maliciously crafted packets, which can terminate the Vnet/IP software stack process. This affects industrial control systems using CENTUM VP R6 and R7 with the vulnerable interface package. Organizations using these Yokogawa industrial automation products are at risk.
💻 Affected Systems
- Vnet/IP Interface Package for CENTUM VP R6 VP6C3300
- Vnet/IP Interface Package for CENTUM VP R7 VP7C3300
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete disruption of Vnet/IP communication in industrial control systems, potentially affecting process monitoring and control in critical infrastructure environments.
Likely Case
Service interruption requiring manual restart of affected Vnet/IP components, causing temporary loss of process visibility and control.
If Mitigated
Isolated impact limited to specific interface components with redundant systems maintaining overall process control.
🎯 Exploit Status
Exploitation requires crafting specific network packets but does not require authentication. The CWE-617 indicates a reachable assertion vulnerability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions newer than R1.07.00
Vendor Advisory: https://web-material3.yokogawa.com/1/39281/files/YSAR-26-0002-E.pdf
Restart Required: Yes
Instructions:
1. Download updated Vnet/IP Interface Package from Yokogawa support portal. 2. Follow vendor installation procedures for CENTUM VP systems. 3. Apply to all affected systems. 4. Restart Vnet/IP services or affected systems as required.
🔧 Temporary Workarounds
Network segmentation and filtering
allRestrict network access to Vnet/IP interfaces using firewalls and network segmentation
Protocol filtering
allImplement network monitoring to detect and block malformed Vnet/IP packets
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Vnet/IP interfaces from untrusted networks
- Deploy intrusion detection systems to monitor for malformed packet patterns targeting Vnet/IP services
🔍 How to Verify
Check if Vulnerable:
Check Vnet/IP Interface Package version in CENTUM VP system configuration or using vendor-provided diagnostic toolsCheck Version:
Use Yokogawa CENTUM VP system utilities or check package installation details in control system configurationVerify Fix Applied:
Verify installed version is newer than R1.07.00 and test Vnet/IP communication functionality📡 Detection & Monitoring
Log Indicators:
- Unexpected termination of Vnet/IP processes
- Connection resets or timeouts in Vnet/IP communication logs
- System event logs showing service crashes
Network Indicators:
- Unusual packet patterns to Vnet/IP ports (typically UDP 1200)
- Multiple connection attempts to Vnet/IP services from single sources
SIEM Query:
source="industrial_control_logs" AND (process_name="VnetIP" OR service_name="Vnet/IP") AND (event_type="crash" OR event_type="termination")