CVE-2025-6034 is a high-severity memory corruption vulnerability classified as an out-of-bounds read (CWE-125) in the NI Circuit Design Suite, specifically within the DefaultFontOptions() function when using the SymbolEditor component. This vulnerability arises when the software attempts to read memory outside the bounds of allocated buffers while processing font options in symbol files (.sym). An attacker can exploit this flaw by crafting a malicious .sym file that, when opened by a user in the vulnerable NI Circuit Design Suite versions 14.3.1 and earlier, triggers the out-of-bounds read. The consequences of successful exploitation include potential information disclosure, where sensitive memory contents may be leaked, and arbitrary code execution, allowing an attacker to execute malicious code with the privileges of the user running the application. The attack vector requires local access to the victim's machine or delivery of the malicious file through social engineering, as user interaction is necessary to open the crafted file. The CVSS v3.1 base score of 7.8 reflects the high impact on confidentiality, integrity, and availability, combined with low attack complexity and no required privileges, but requiring user interaction. No known exploits are currently reported in the wild, and no patches have been linked yet, indicating that organizations should prioritize monitoring and mitigation efforts. The vulnerability affects a specialized engineering software suite widely used for electronic circuit design, making it a critical concern for organizations relying on NI Circuit Design Suite for their design workflows.

For European organizations, the impact of CVE-2025-6034 can be significant, particularly for those in the electronics design, manufacturing, and research sectors that utilize NI Circuit Design Suite. Exploitation could lead to unauthorized disclosure of proprietary design data, intellectual property theft, or sabotage of design files through arbitrary code execution. This could result in financial losses, reputational damage, and disruption of product development cycles. Additionally, if exploited within critical infrastructure or defense-related projects, the vulnerability could pose national security risks. The requirement for user interaction means that targeted phishing or social engineering campaigns could be effective attack vectors. Given the high confidentiality and integrity impact, organizations handling sensitive or regulated data must treat this vulnerability as a priority. The lack of known exploits currently provides a window for proactive mitigation before widespread exploitation occurs.

To mitigate CVE-2025-6034, European organizations should implement the following specific measures: 1) Immediately audit and inventory all instances of NI Circuit Design Suite in use, identifying versions 14.3.1 and earlier. 2) Restrict the opening of .sym files from untrusted or unknown sources by enforcing strict file handling policies and user training to recognize suspicious files. 3) Employ application whitelisting and sandboxing techniques for NI Circuit Design Suite to limit the impact of potential exploitation. 4) Monitor network and endpoint logs for unusual activity related to the SymbolEditor or file opening events. 5) Coordinate with NI for timely patch deployment once available, and subscribe to vendor security advisories for updates. 6) Consider implementing Data Loss Prevention (DLP) controls to detect and prevent unauthorized exfiltration of sensitive design data. 7) Enhance user awareness training focused on social engineering risks associated with opening unsolicited or unexpected files. These targeted actions go beyond generic advice by focusing on the specific attack vector and operational context of the vulnerability.