CVE-2025-2327 is a medium-severity vulnerability affecting Pure Storage FlashArray products, specifically versions 6.0.0 through 6.8.0. The vulnerability is classified under CWE-532, which involves the insertion of sensitive information into log files. In this case, the flaw occurs during the key rotation process when the Remote Data Locking (RDL) feature is configured. During this process, the Key Encryption Key (KEK), a critical cryptographic key used to protect data encryption keys, is inadvertently logged in plaintext within system logs. This exposure of the KEK in logs presents a significant risk because logs are often accessible by system administrators, support personnel, or potentially attackers who gain access to the system or log management infrastructure. The CVSS 4.0 base score of 5.1 reflects a medium severity, with the vector indicating network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:H - high privileges required), no user interaction (UI:N), and limited impact confined to confidentiality (VC:L) without affecting integrity or availability. The vulnerability does not require user interaction but does require high privileges, meaning an attacker or insider with elevated access could exploit this flaw to retrieve the KEK from logs. Since the KEK is fundamental to securing data at rest, its exposure could lead to decryption of stored data if an attacker obtains the logs. However, there are no known exploits in the wild as of the published date (June 16, 2025), and no patches have been released yet. The vulnerability is specific to Pure Storage FlashArray devices configured with RDL, which is a feature used in environments requiring enhanced data protection and compliance. This flaw highlights a critical operational security oversight where sensitive cryptographic material is not properly redacted or protected in logs, violating best practices for key management and secure logging.

For European organizations using Pure Storage FlashArray devices with RDL enabled, this vulnerability poses a risk to the confidentiality of encrypted data. If an attacker or malicious insider with administrative access can access system logs, they could extract the KEK and potentially decrypt sensitive data stored on the FlashArray. This could lead to data breaches involving personal data, intellectual property, or critical business information, undermining compliance with GDPR and other data protection regulations. The impact is particularly significant for sectors with stringent data security requirements such as finance, healthcare, government, and critical infrastructure. The exposure of KEK could also facilitate lateral movement within networks if attackers leverage decrypted data to escalate privileges or compromise additional systems. Although the vulnerability does not affect data integrity or availability directly, the loss of confidentiality can have severe reputational and financial consequences. Given the medium CVSS score and the requirement for high privileges, the threat is more relevant in scenarios where internal threat actors or attackers have already gained elevated access, emphasizing the need for strict access controls and monitoring. The absence of known exploits reduces immediate risk but does not eliminate the need for proactive mitigation, especially in high-value environments prevalent in Europe.

1. Immediate mitigation should focus on restricting access to system logs containing sensitive information. Implement strict role-based access controls (RBAC) and audit logging access to detect unauthorized attempts. 2. Disable or carefully review the use of Remote Data Locking (RDL) if it is not essential, as this feature triggers the logging of the KEK. 3. Monitor logs for any unexpected access or exfiltration attempts, using Security Information and Event Management (SIEM) tools with alerts for unusual log access patterns. 4. Coordinate with Pure Storage for upcoming patches or firmware updates addressing this vulnerability and plan timely deployment once available. 5. As a temporary workaround, consider log sanitization or filtering mechanisms to redact or encrypt sensitive key material before logs are stored or transmitted. 6. Conduct a thorough review of key management policies and ensure that KEKs are rotated regularly and stored securely outside of logs. 7. Train system administrators and security teams on the risks of sensitive data exposure in logs and enforce best practices for secure logging. 8. Implement network segmentation and multi-factor authentication (MFA) to reduce the risk of unauthorized privileged access that could exploit this vulnerability.