CVE-2025-48022
📋 TL;DR
A vulnerability in Yokogawa's Vnet/IP Interface Package allows attackers to crash the Vnet/IP software stack by sending maliciously crafted packets. This affects industrial control systems using CENTUM VP R6 and R7 with the vulnerable interface package. The vulnerability can cause process termination leading to potential disruption of industrial operations.
💻 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
Denial of service causing industrial process disruption, potentially leading to production downtime or safety system impacts in critical infrastructure environments.
Likely Case
Service disruption requiring manual restart of affected Vnet/IP processes, causing temporary operational interruptions.
If Mitigated
Minimal impact with proper network segmentation and monitoring allowing quick detection and recovery.
🎯 Exploit Status
Exploitation requires network access to send crafted packets to vulnerable interface
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: R1.08.00 or later
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. Restart affected services/systems as required.
🔧 Temporary Workarounds
Network Segmentation
allIsolate CENTUM VP systems in dedicated industrial control network segments with strict firewall rules
Traffic Filtering
allImplement network filtering to restrict access to Vnet/IP ports from unauthorized sources
🧯 If You Can't Patch
- Implement strict network access controls to limit which systems can communicate with CENTUM VP Vnet/IP interfaces
- Deploy network monitoring and intrusion detection specifically for industrial control system traffic patterns
🔍 How to Verify
Check if Vulnerable:
Check Vnet/IP Interface Package version in CENTUM VP system configuration or contact Yokogawa supportCheck Version:
Check through CENTUM VP system configuration interface or Yokogawa diagnostic toolsVerify Fix Applied:
Verify Vnet/IP Interface Package version is R1.08.00 or later in system configuration📡 Detection & Monitoring
Log Indicators:
- Unexpected Vnet/IP process terminations
- Service restart events in CENTUM VP logs
- Network connection attempts to Vnet/IP ports
Network Indicators:
- Unusual traffic patterns to Vnet/IP ports (typically UDP 50020)
- Malformed packet patterns targeting industrial protocols
SIEM Query:
source="centum-vp-logs" AND (event_type="process_termination" OR event_type="service_restart") AND process_name="vnet_ip"