CVE-2025-7735 is a high-severity SQL Injection vulnerability (CWE-89) identified in the UNIMAX Hospital Information System. This vulnerability allows unauthenticated remote attackers to inject arbitrary SQL commands into the system's database queries. The flaw arises from improper neutralization of special elements used in SQL commands, meaning that user-supplied input is not correctly sanitized or parameterized before being incorporated into SQL statements. As a result, attackers can manipulate the backend database queries to read sensitive data without authentication. The vulnerability is remotely exploitable over the network without requiring any user interaction or privileges, increasing the risk of exploitation. The CVSS v3.1 base score is 7.5, reflecting high impact on confidentiality with no impact on integrity or availability. Although no known exploits are currently reported in the wild, the nature of SQL Injection vulnerabilities and the criticality of hospital information systems make this a significant threat. The affected product is the UNIMAX Hospital Information System, with affected versions listed as "0" which likely indicates the initial or all versions prior to patching. The vulnerability was published on July 17, 2025, and no patches or mitigations have been linked yet, indicating that organizations using this system may be exposed until a fix is released and applied.

For European healthcare organizations using the UNIMAX Hospital Information System, this vulnerability poses a serious risk to patient data confidentiality. Successful exploitation could lead to unauthorized disclosure of sensitive medical records, personal identification information, and other protected health information. Such breaches can result in regulatory penalties under GDPR, loss of patient trust, and potential harm if attackers use the data for identity theft or fraud. Although the vulnerability does not directly affect data integrity or system availability, the exposure of confidential information alone is critical in healthcare contexts. Additionally, attackers could leverage the access gained through SQL Injection to perform further lateral movement or reconnaissance within hospital networks. Given the critical role of hospital information systems in patient care, any compromise could disrupt healthcare delivery indirectly through loss of trust or forced system shutdowns for remediation. The lack of authentication requirement and ease of remote exploitation increase the likelihood of attacks, especially if threat actors target healthcare providers amid ongoing geopolitical tensions or cybercrime campaigns in Europe.

Organizations should immediately conduct an inventory to identify deployments of the UNIMAX Hospital Information System and assess exposure. Until an official patch is released, the following specific mitigations are recommended: 1) Implement Web Application Firewalls (WAFs) with rules designed to detect and block SQL Injection attempts targeting the UNIMAX system's known endpoints. 2) Employ strict input validation and sanitization at the application layer, if possible, to neutralize special characters in user inputs. 3) Restrict network access to the Hospital Information System to trusted internal networks and VPNs to reduce exposure to unauthenticated external attackers. 4) Monitor database query logs and application logs for unusual or suspicious SQL commands indicative of injection attempts. 5) Engage with the vendor UNIMAX for timely updates and patches, and plan for rapid deployment once available. 6) Conduct penetration testing focused on SQL Injection vectors to verify the effectiveness of mitigations. 7) Educate IT and security teams about this vulnerability to ensure rapid detection and response to potential exploitation attempts.