CVE-2025-59298 is an out-of-bounds write vulnerability classified under CWE-787 affecting Delta Electronics' DIAScreen software. The root cause is improper validation of user-supplied files, which can lead to memory corruption when a maliciously crafted file is opened. This memory corruption enables an attacker to execute arbitrary code within the context of the DIAScreen process, potentially leading to unauthorized actions such as data manipulation, system compromise, or disruption of industrial control processes. The vulnerability requires the victim to open a malicious file, implying user interaction is necessary, and the attack vector is local (AV:L). No privileges or authentication are required, increasing the attack surface. The CVSS 4.0 vector indicates low complexity (AC:L), no privileges (PR:N), user interaction required (UI:A), and high impact on availability (VA:H), with limited impact on confidentiality and integrity. Although no public exploits are known, the vulnerability poses a significant risk to environments where DIAScreen is used, particularly in industrial automation contexts where Delta Electronics products are common. The lack of a patch at the time of publication necessitates immediate mitigation efforts to reduce exposure.

For European organizations, particularly those in manufacturing, industrial automation, and critical infrastructure sectors using Delta Electronics DIAScreen, this vulnerability could lead to unauthorized code execution, resulting in operational disruption, data integrity loss, or potential safety hazards. The ability to execute code in the context of the DIAScreen process could allow attackers to manipulate industrial control systems, causing downtime or physical damage. Confidentiality risks are moderate, but integrity and availability impacts are high, which is critical for industrial environments. The requirement for user interaction limits remote exploitation but does not eliminate risk, especially in environments where file sharing or external file sources are common. The absence of known exploits currently provides a window for proactive defense, but the medium severity score indicates that timely mitigation is essential to prevent potential targeted attacks.

1. Restrict file sources: Limit the ability to open files from untrusted or external sources within DIAScreen. 2. Implement application whitelisting to ensure only authorized files and processes can execute within the environment. 3. Educate users on the risks of opening files from unknown or untrusted origins to reduce the likelihood of triggering the vulnerability. 4. Monitor system and application logs for unusual behavior or crashes related to DIAScreen that could indicate exploitation attempts. 5. Employ network segmentation to isolate systems running DIAScreen from less secure network zones. 6. Use endpoint detection and response (EDR) solutions to detect anomalous process behavior indicative of exploitation. 7. Engage with Delta Electronics for updates or patches and apply them promptly once available. 8. Consider deploying sandboxing or file scanning solutions to analyze files before they are opened in DIAScreen.