CVE-2025-59297 is an out-of-bounds write vulnerability classified under CWE-787 found in Delta Electronics' DIAScreen software. The root cause is the lack of proper validation of user-supplied files, which leads to memory corruption when a maliciously crafted file is opened. This memory corruption can be exploited by an attacker to execute arbitrary code within the context of the DIAScreen process. The vulnerability requires the victim to open a malicious file, indicating user interaction is necessary. No privileges or authentication are required, but the attacker must have local access or the ability to deliver a malicious file to the user. The CVSS 4.0 vector indicates a local attack vector (AV:L), low attack complexity (AC:L), no privileges required (PR:N), user interaction required (UI:A), and partial impact on confidentiality, integrity, and high impact on availability. The vulnerability does not involve scope change or security requirements changes. Currently, there are no known exploits in the wild, and no patches have been published yet. DIAScreen is used in industrial automation and control systems, making this vulnerability particularly relevant for operational technology environments. Exploitation could lead to unauthorized code execution, potentially disrupting industrial processes or causing safety hazards.

For European organizations, especially those in industrial automation, manufacturing, and critical infrastructure sectors, this vulnerability poses a significant risk. Successful exploitation could lead to unauthorized code execution, potentially disrupting industrial control processes, causing downtime, or even physical damage depending on the deployment context. Confidentiality could be compromised if sensitive operational data is accessed or manipulated. Integrity risks arise from the possibility of altering control commands or system configurations. Availability impact is high as the vulnerability could be used to crash or destabilize the DIAScreen application, interrupting industrial operations. Given the reliance on industrial automation in countries like Germany, France, and Italy, the threat could affect critical supply chains and manufacturing outputs. The requirement for user interaction and local access somewhat limits remote exploitation but does not eliminate risk from phishing or insider threats. The absence of known exploits currently provides a window for proactive mitigation.

Organizations should implement strict controls on file sources and user permissions to minimize the risk of opening malicious files. Employ application whitelisting and sandboxing techniques to isolate DIAScreen processes and limit the impact of potential exploitation. Network segmentation should be enforced to restrict access to systems running DIAScreen, especially from less trusted networks. Regular monitoring and logging of DIAScreen activity can help detect anomalous behavior indicative of exploitation attempts. Until a patch is released, consider disabling or limiting the use of file import features within DIAScreen where feasible. User training to recognize and avoid opening suspicious files is critical. Additionally, maintain up-to-date backups of critical configurations and data to enable recovery in case of compromise. Engage with Delta Electronics for timely patch deployment once available and follow vendor advisories closely.