CVE-2025-48023 identifies a reachable assertion vulnerability (CWE-617) in the Vnet/IP Interface Package developed by Yokogawa Electric Corporation, specifically affecting versions R1.07.00 and earlier used in CENTUM VP R6 (VP6C3300) and R7 (VP7C3300) platforms. The vulnerability arises when the affected software processes maliciously crafted network packets, triggering an assertion failure that causes the Vnet/IP software stack process to terminate unexpectedly. This results in a denial-of-service (DoS) condition, disrupting communication within industrial control systems (ICS) that rely on this interface for network communication. The vulnerability does not require authentication or user interaction but has a high attack complexity, meaning exploitation is non-trivial and likely requires specialized knowledge or conditions. The CVSS 4.0 vector indicates the attack is network-based (AV:A), with high complexity (AC:H), no privileges required (PR:N), no user interaction (UI:N), and impacts availability with high severity (VA:H). There is no impact on confidentiality or integrity. No public exploits are known at this time, and no patches have been linked yet. The vulnerability was published in February 2026, with the initial reservation in May 2025. The affected products are primarily used in industrial automation environments, particularly in process control systems.

The primary impact of CVE-2025-48023 is a denial-of-service condition that can disrupt the availability of industrial control systems using Yokogawa's Vnet/IP Interface Package. This can lead to interruptions in critical infrastructure operations such as manufacturing, energy production, water treatment, and other industrial processes dependent on CENTUM VP platforms. The termination of the Vnet/IP software stack process may cause loss of communication between control system components, potentially halting automated processes and requiring manual intervention. While the vulnerability does not compromise confidentiality or integrity, the availability impact can have significant operational and safety consequences in industrial environments. Organizations worldwide relying on these Yokogawa products could experience downtime, reduced operational efficiency, and increased risk of safety incidents. The lack of known exploits reduces immediate risk, but the medium severity and network attack vector warrant proactive mitigation to prevent potential exploitation by threat actors targeting industrial systems.

1. Monitor Yokogawa’s official channels for patches or updates addressing CVE-2025-48023 and apply them promptly once available. 2. Implement strict network segmentation to isolate industrial control networks from general IT networks and limit exposure of Vnet/IP Interface Package endpoints to untrusted networks. 3. Deploy intrusion detection and prevention systems (IDS/IPS) with signatures or anomaly detection capabilities tailored to detect malformed or suspicious Vnet/IP packets. 4. Restrict network access to the affected devices using firewall rules, allowing only trusted management and control systems to communicate with the Vnet/IP interface. 5. Conduct regular network traffic analysis to identify unusual packet patterns that could indicate exploitation attempts. 6. Establish incident response procedures specific to industrial control system disruptions to minimize downtime and safely restore operations if a DoS occurs. 7. Train ICS security personnel on this vulnerability and encourage vigilance for signs of network-based attacks targeting Yokogawa systems. 8. Consider deploying redundant communication paths or failover mechanisms within the control system architecture to maintain availability during an attack.