CVE-2025-30048 is a security vulnerability identified in the CGM CLININET product by CGM. The vulnerability is classified under CWE-306, which refers to Missing Authentication for Critical Function. Specifically, the issue lies in the "serverConfig" endpoint of the CGM CLININET system. This endpoint returns sensitive module configuration data, including credentials, but is accessible without any authentication. This means that an unauthenticated attacker with network access to the system can retrieve critical configuration information that should be protected. The CVSS 4.0 base score for this vulnerability is 5.3, indicating a medium severity level. The vector string (AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L) shows that the attack requires adjacent network access (AV:A), has low attack complexity (AC:L), does not require authentication (PR:N), and does not require user interaction (UI:N). The vulnerability impacts confidentiality, integrity, and availability to a limited extent (VC:L, VI:L, VA:L), and the scope is limited (S:L). No known exploits are currently reported in the wild, and no patches have been linked yet. The vulnerability was published on August 27, 2025, with the initial reservation date in March 2025. The lack of authentication on an endpoint exposing credentials is a critical design flaw that could allow attackers to gain unauthorized access to sensitive system configurations, potentially leading to further exploitation or lateral movement within a healthcare environment where CGM CLININET is deployed.

For European organizations, particularly healthcare providers using CGM CLININET, this vulnerability poses a significant risk. The exposure of module configuration and credentials without authentication can lead to unauthorized access to sensitive patient data, disruption of healthcare services, and potential compliance violations under GDPR and other data protection regulations. Attackers could leverage the exposed credentials to escalate privileges, access other parts of the network, or manipulate clinical data, impacting patient safety and trust. The medium CVSS score reflects the need for attention but also indicates that exploitation requires network proximity, which somewhat limits the attack surface. However, given the critical nature of healthcare data and services, even medium-severity vulnerabilities can have outsized impacts. The absence of known exploits currently provides a window for proactive mitigation, but organizations should act swiftly to prevent potential exploitation.

1. Immediate Network Segmentation: Restrict access to the CGM CLININET system and specifically the "serverConfig" endpoint to trusted internal networks only, using firewalls and network access controls. 2. Implement Access Controls: Until an official patch is available, deploy web application firewalls (WAFs) or reverse proxies to enforce authentication on the vulnerable endpoint or block access entirely. 3. Monitor and Audit: Enable detailed logging and monitoring of access to the CGM CLININET system, focusing on the "serverConfig" endpoint to detect any unauthorized access attempts. 4. Vendor Engagement: Engage with CGM to obtain timelines for patches or updates addressing this vulnerability and apply them promptly once available. 5. Credential Rotation: As a precaution, rotate any credentials that might have been exposed or are stored in the configuration to limit the impact of potential compromise. 6. Incident Response Preparation: Prepare incident response plans specific to this vulnerability, including steps for containment and recovery in case of exploitation. 7. Network Access Controls: Use VPNs or zero-trust network access solutions to limit who can reach the CGM CLININET system, reducing the risk from adjacent network attackers. 8. Security Awareness: Educate IT and security teams about this vulnerability and the importance of monitoring and controlling access to critical healthcare systems.