CVE-2025-9962 is a classic buffer overflow vulnerability (CWE-120) found in the Novakon P series industrial control devices, specifically models P07, P10, P12, and P15. The vulnerability exists due to a failure to properly check the size of input data before copying it into a buffer, leading to memory corruption. This flaw allows an attacker to execute arbitrary code with root privileges without requiring any authentication or user interaction. The affected firmware versions range from P – V2001.A.C518o2 up to P-2.0.05 Build 2026.02.06. The vulnerability was publicly disclosed on September 23, 2025, with a CVSS 4.0 score of 10.0, indicating a critical severity level. The attack vector is network-based, requiring no privileges or user interaction, and impacts confidentiality, integrity, and availability at a high level. Despite no known exploits in the wild, the vulnerability's characteristics make it highly exploitable and dangerous. The lack of available patches at the time of disclosure increases the urgency for mitigations. Novakon P series devices are commonly used in industrial environments, including manufacturing and critical infrastructure sectors, making this vulnerability particularly concerning for operational technology (OT) security.

The impact of CVE-2025-9962 is severe and multifaceted. Successful exploitation grants attackers root-level access, enabling full control over affected devices. This can lead to unauthorized data access, manipulation or destruction of critical operational data, disruption of industrial processes, and potential physical damage to equipment. The ability to compromise devices without authentication or user interaction significantly lowers the barrier for attackers, increasing the likelihood of exploitation. Organizations relying on Novakon P series devices for industrial control or automation face risks including operational downtime, safety hazards, intellectual property theft, and regulatory non-compliance. The vulnerability also poses a threat to supply chain integrity and could be leveraged in broader cyber-physical attacks targeting critical infrastructure sectors such as energy, manufacturing, and utilities worldwide.

1. Immediate deployment of vendor patches or firmware updates once released by Novakon is critical to remediate this vulnerability. 2. Until patches are available, implement network segmentation to isolate Novakon P series devices from untrusted networks, limiting exposure. 3. Employ strict access control lists (ACLs) and firewall rules to restrict network traffic to and from affected devices, allowing only trusted management stations. 4. Monitor network traffic for anomalous patterns indicative of exploitation attempts, such as unexpected buffer overflow signatures or unusual command executions. 5. Conduct regular vulnerability assessments and penetration testing focused on industrial control systems to identify and address security gaps. 6. Maintain up-to-date asset inventories to quickly identify affected devices and prioritize remediation efforts. 7. Educate operational technology (OT) personnel about the risks and signs of exploitation to enhance detection and response capabilities. 8. Consider deploying intrusion detection/prevention systems (IDS/IPS) tailored for OT environments to detect exploitation attempts in real time.