CVE-2025-64462 is an out-of-bounds read vulnerability classified under CWE-125 found in the NI LabVIEW software, specifically within the LVResFile::RGetMemFileHandle() function. This function is responsible for handling memory file operations when parsing VI (Virtual Instrument) files, which are the core project files used by LabVIEW. When a corrupted or specially crafted VI file is processed, the function may read memory beyond the allocated buffer boundaries, leading to undefined behavior. This can result in information disclosure, where sensitive data in memory is exposed, or arbitrary code execution, allowing an attacker to run malicious code within the context of the LabVIEW process. Exploitation requires user interaction, specifically opening a malicious VI file, and does not require prior authentication. The vulnerability affects multiple versions of LabVIEW including 23.1.0, 24.1.0, 25.1.0, and earlier, up to version 25.3 (2025 Q3). The CVSS v3.1 base score of 7.8 reflects a high severity rating due to the potential for full system compromise. No public exploits have been reported yet, but the vulnerability's nature and impact make it a critical concern for organizations relying on LabVIEW for industrial automation, testing, and engineering applications. The vulnerability was reserved on November 4, 2025, and published on December 18, 2025. No official patches were listed at the time of this report, indicating that users should monitor NI's advisories closely for updates.

The impact of CVE-2025-64462 is significant for organizations using NI LabVIEW, especially in sectors such as manufacturing, industrial automation, aerospace, automotive, and research institutions where LabVIEW is widely deployed. Successful exploitation can lead to unauthorized disclosure of sensitive intellectual property or operational data, compromising confidentiality. More critically, arbitrary code execution could allow attackers to take control of affected systems, potentially disrupting automated processes, corrupting data, or pivoting to other parts of the network. Given LabVIEW’s role in controlling and monitoring physical systems, such compromises could lead to safety risks, operational downtime, and financial losses. The requirement for user interaction (opening a malicious VI file) limits the attack vector to targeted phishing or insider threats but does not eliminate risk, especially in environments where users frequently exchange VI files. The absence of known exploits in the wild suggests a window for proactive defense, but the high CVSS score underscores the urgency of mitigation.

To mitigate CVE-2025-64462 effectively, organizations should implement a multi-layered approach: 1) Immediately restrict the opening of VI files from untrusted or unknown sources by enforcing strict file handling policies and user training to recognize suspicious files. 2) Employ application whitelisting and sandboxing techniques to isolate LabVIEW processes, limiting the impact of potential exploitation. 3) Monitor and control network shares and email attachments to prevent delivery of malicious VI files. 4) Use endpoint detection and response (EDR) tools to identify anomalous behaviors indicative of exploitation attempts. 5) Regularly back up critical LabVIEW projects and configurations to enable recovery in case of compromise. 6) Stay vigilant for official patches or updates from NI and apply them promptly once available. 7) Consider implementing file integrity monitoring on VI files to detect unauthorized modifications. 8) If feasible, conduct internal code reviews or static analysis on VI files received from external sources to identify potential corruption or malicious constructs. These steps go beyond generic advice by focusing on the unique aspects of LabVIEW’s file handling and operational context.