CVE-2025-59300 is a vulnerability classified under CWE-787 (Out-Of-Bounds Write) affecting Delta Electronics' DIAScreen software. The root cause is the software's failure to properly validate user-supplied files before processing. When a user opens a specially crafted malicious file, the vulnerability allows an attacker to write outside the intended memory bounds, potentially overwriting critical data structures or code pointers. This can lead to arbitrary code execution within the context of the DIAScreen process, enabling the attacker to execute malicious payloads with the same privileges as the user running the application. The CVSS 4.0 vector indicates the attack requires local access (AV:L), low attack complexity (AC:L), no privileges (PR:N), but does require user interaction (UI:A). The impact on confidentiality, integrity, and availability is rated as low to high depending on the attacker's goals, with high impact on availability due to potential system crashes or manipulation. No patches are currently available, and no exploits have been observed in the wild, but the vulnerability is publicly disclosed and should be addressed promptly. DIAScreen is commonly used in industrial automation and control systems, making this vulnerability particularly relevant for operational technology environments.

For European organizations, especially those in manufacturing, industrial automation, and critical infrastructure sectors, this vulnerability poses a risk of unauthorized code execution leading to potential system compromise, data corruption, or disruption of industrial processes. Exploitation could result in downtime, safety hazards, or loss of operational integrity. Since DIAScreen is used in monitoring and control environments, attackers could manipulate system behavior or cause denial of service. The requirement for user interaction limits remote exploitation but does not eliminate risk, as social engineering or insider threats could trigger the vulnerability. The medium CVSS score reflects a balanced risk, but the operational impact in industrial contexts could be significant. Organizations relying on DIAScreen should consider this vulnerability a priority for risk assessment and mitigation.

1. Monitor Delta Electronics' official channels for patches or updates addressing CVE-2025-59300 and apply them immediately upon release. 2. Implement strict file handling policies to restrict opening files from untrusted or unknown sources within DIAScreen. 3. Employ application whitelisting to limit execution of unauthorized code and prevent exploitation. 4. Use endpoint detection and response (EDR) solutions to monitor for suspicious behavior indicative of exploitation attempts. 5. Conduct user awareness training focused on recognizing and avoiding malicious files to reduce the risk of user interaction exploitation. 6. Segment industrial networks to isolate DIAScreen systems from broader enterprise networks, minimizing lateral movement. 7. Regularly back up critical configurations and data to enable recovery in case of compromise or disruption. 8. Perform vulnerability scanning and penetration testing in environments running DIAScreen to identify and remediate potential exploitation paths proactively.