CVE-2025-9273 is a medium-severity vulnerability identified in the CData API Server version 23.0.8844.0, specifically related to its MySQL connection configuration. The vulnerability arises from a misconfiguration where the API Server enables a MySQL client option that permits the MySQL server to request local files from the client machine. This behavior can be exploited by an authenticated remote attacker to disclose sensitive information accessible to the NETWORK SERVICE context on the affected system. The flaw is categorized under CWE-552, which pertains to files or directories being accessible to external parties, leading to information disclosure. Exploitation does not require user interaction but does require valid authentication credentials, limiting the attack surface to authorized users or compromised accounts. The vulnerability does not impact integrity or availability but compromises confidentiality by allowing unauthorized access to local files. No public exploits are currently known, and no patches have been published at the time of this report. The CVSS v3.0 base score is 4.3, reflecting a medium severity level due to the requirement for authentication and limited impact scope.

For European organizations using CData API Server, this vulnerability poses a risk of sensitive data leakage from the server environment, particularly data accessible by the NETWORK SERVICE account. This could include configuration files, credentials, or other sensitive information stored locally. Such information disclosure could facilitate further attacks, including privilege escalation or lateral movement within the network. Organizations in sectors with stringent data protection regulations, such as finance, healthcare, and government, may face compliance risks if sensitive personal or business data is exposed. The requirement for authentication reduces the risk from external attackers but raises concerns about insider threats or compromised credentials. Given the widespread use of MySQL and API integration in European enterprises, the vulnerability could impact data confidentiality and trust in API services, potentially disrupting business operations and damaging reputations.

To mitigate this vulnerability, European organizations should: 1) Immediately review and restrict access to the CData API Server, ensuring that only trusted and necessary users have authentication credentials. 2) Apply the principle of least privilege to the NETWORK SERVICE account and related service accounts to minimize accessible data. 3) Monitor and audit API Server logs for unusual access patterns or file requests indicative of exploitation attempts. 4) Disable or reconfigure the MySQL client option that allows the server to request local files if possible, or apply vendor-provided patches once available. 5) Implement network segmentation to isolate the API Server from sensitive internal resources. 6) Conduct regular credential hygiene practices, including multi-factor authentication and periodic password changes, to reduce the risk of credential compromise. 7) Engage with CData support for updates or workarounds and stay informed about patch releases.