CVE-2025-15351 is a deserialization vulnerability identified in Anritsu VectorStar version 2024.11.1, specifically within the CHX file parsing component. The vulnerability arises from the software's failure to properly validate user-supplied data before deserializing it, which can be exploited by attackers to execute arbitrary code remotely. The attack vector requires user interaction, such as opening a maliciously crafted CHX file or visiting a malicious webpage that triggers the vulnerable deserialization process. Once exploited, the attacker can execute code with the same privileges as the VectorStar process, potentially leading to full system compromise depending on the environment. The CVSS v3.0 score of 7.8 reflects high impact on confidentiality, integrity, and availability, with low attack complexity and no privileges required, but user interaction is necessary. The vulnerability was reported by ZDI (ZDI-CAN-27040) and is currently published without known active exploits. VectorStar is used primarily in telecommunications and RF measurement contexts, making this vulnerability particularly relevant to organizations relying on precise signal analysis and testing equipment. The lack of a patch link suggests that mitigation currently relies on workarounds and defensive measures until an official fix is released.

For European organizations, the impact of CVE-2025-15351 can be significant, especially in sectors relying on Anritsu VectorStar for telecommunications testing, aerospace, defense, and research. Successful exploitation could lead to unauthorized code execution, allowing attackers to steal sensitive data, disrupt measurement processes, or pivot within the network to compromise additional systems. This could result in operational downtime, loss of data integrity, and exposure of confidential research or communication data. Given the high confidentiality, integrity, and availability impact, organizations could face regulatory and compliance repercussions under GDPR if personal or sensitive data is compromised. The requirement for user interaction somewhat limits mass exploitation but targeted attacks against key personnel or systems remain a serious concern. The absence of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, especially as threat actors may develop exploits once the vulnerability details become widely known.

1. Restrict the sources of CHX files to trusted and verified origins only, implementing strict file handling policies. 2. Employ application whitelisting and sandboxing techniques to isolate VectorStar and limit the impact of potential code execution. 3. Educate users about the risks of opening unsolicited or unexpected CHX files and visiting untrusted websites. 4. Monitor network and host activity for unusual behavior indicative of exploitation attempts, such as unexpected process launches or network connections from VectorStar. 5. Implement strict input validation and filtering at the application or network level where possible to detect and block malicious payloads. 6. Coordinate with Anritsu for timely updates and patches; apply security updates immediately once available. 7. Consider deploying endpoint detection and response (EDR) solutions capable of detecting deserialization attacks and anomalous execution patterns. 8. Maintain regular backups and incident response plans tailored to potential compromise scenarios involving VectorStar systems.