CVE-2025-64676 is a vulnerability identified in Microsoft Purview, a data governance and compliance platform. It is categorized as CWE-94, indicating improper control of code generation leading to code injection. This vulnerability allows an attacker with authorized access to execute arbitrary code remotely over a network without requiring user interaction. The root cause is insufficient validation or sanitization of inputs that influence code generation within the Purview environment, enabling malicious code to be injected and executed. The CVSS v3.1 base score is 7.2, reflecting a high severity due to the network attack vector (AV:N), low attack complexity (AC:L), and the requirement for high privileges (PR:H). The impact metrics indicate complete compromise of confidentiality, integrity, and availability (C:H/I:H/A:H). Although no specific affected versions are listed, the vulnerability is confirmed as published and assigned by Microsoft. No known exploits have been reported in the wild, and no patches have been released yet, indicating a window of exposure. The vulnerability's exploitation could allow attackers to manipulate data governance processes, exfiltrate sensitive information, or disrupt compliance operations, severely impacting organizational security posture.

For European organizations, the impact of CVE-2025-64676 is significant due to the critical role Microsoft Purview plays in managing data governance, compliance, and risk management. Successful exploitation could lead to unauthorized data access, manipulation, or deletion, undermining regulatory compliance such as GDPR. The integrity and availability of compliance data and processes could be compromised, potentially causing operational disruptions and reputational damage. Organizations in finance, healthcare, government, and critical infrastructure sectors are particularly vulnerable due to the sensitive nature of their data and regulatory scrutiny. The requirement for high privileges limits exploitation to insiders or compromised accounts, but the remote execution capability increases the risk of lateral movement and broader network compromise. The absence of patches and known exploits means organizations must proactively mitigate risk to prevent potential attacks.

1. Enforce strict access controls and least privilege principles for all Microsoft Purview users, ensuring only necessary personnel have high-level privileges. 2. Implement network segmentation to isolate Purview environments from general user networks, reducing exposure to unauthorized access. 3. Monitor logs and network traffic for unusual activities indicative of code injection attempts or privilege misuse within Purview. 4. Apply multi-factor authentication (MFA) for all administrative and privileged accounts to reduce the risk of credential compromise. 5. Maintain up-to-date backups of Purview configurations and data to enable recovery in case of compromise. 6. Stay informed on Microsoft security advisories and apply patches immediately once available. 7. Conduct regular security assessments and penetration testing focused on Purview environments to identify and remediate potential weaknesses. 8. Educate administrators and users about the risks of code injection and the importance of secure coding and configuration practices within Purview.