CVE-2025-2634 is a high-severity vulnerability identified in National Instruments (NI) LabVIEW software, specifically affecting versions 2025 Q1 and earlier (including versions 23.0.0, 24.0.0, and 25.0.0). The vulnerability stems from improper validation of specified index, position, or offset in input within the fontmgr component of LabVIEW. This improper bounds checking leads to an out-of-bounds read condition, which can be exploited by an attacker to cause information disclosure or arbitrary code execution. The attack vector requires that the victim user open a specially crafted Virtual Instrument (VI) file, which triggers the vulnerability. The CVSS v3.1 base score is 7.8, indicating high severity, with the vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. This means the attack requires local access (AV:L), low attack complexity (AC:L), no privileges (PR:N), user interaction (UI:R), unchanged scope (S:U), and results in high impact on confidentiality, integrity, and availability. No known exploits are currently reported in the wild, and no official patches have been linked yet. The vulnerability is categorized under CWE-1285, which relates to improper validation of specified index, position, or offset in input, a common cause of out-of-bounds memory access issues. Given the nature of LabVIEW as a graphical programming environment widely used in industrial, engineering, and scientific applications, exploitation could lead to severe consequences including unauthorized code execution and leakage of sensitive data embedded in LabVIEW projects or runtime environments.

For European organizations, the impact of CVE-2025-2634 could be significant, particularly for those in sectors relying heavily on NI LabVIEW for automation, testing, measurement, and control systems. These sectors include manufacturing, automotive, aerospace, telecommunications, and research institutions. Exploitation could lead to unauthorized disclosure of proprietary or sensitive data, disruption of critical industrial processes, and potential compromise of safety-critical systems. The requirement for user interaction (opening a malicious VI file) suggests targeted attacks, possibly via phishing or supply chain vectors. Given the high impact on confidentiality, integrity, and availability, successful exploitation could result in intellectual property theft, operational downtime, and damage to organizational reputation. The lack of known exploits in the wild provides a window for proactive mitigation, but the high severity score demands urgent attention to prevent potential future attacks.

To mitigate CVE-2025-2634, European organizations should: 1) Immediately audit and inventory all LabVIEW installations and identify versions at or below 2025 Q1. 2) Restrict the opening of VI files from untrusted or unknown sources, implementing strict file handling policies and user training to recognize suspicious files. 3) Employ application whitelisting and sandboxing techniques to limit the execution context of LabVIEW and reduce the impact of potential exploitation. 4) Monitor and analyze network and endpoint logs for unusual activity related to LabVIEW processes, especially file open events and memory anomalies. 5) Engage with NI for timely updates and patches; if no official patch is available, consider temporary mitigations such as disabling fontmgr components or limiting user permissions to reduce attack surface. 6) Incorporate this vulnerability into vulnerability management and incident response plans, preparing for rapid containment and remediation if exploitation is detected. 7) Educate users on the risks of opening unsolicited VI files and implement multi-factor authentication to reduce the risk of unauthorized access facilitating exploitation.