CVE-2025-40621 is a critical SQL injection vulnerability affecting TCMAN's GIM product version 11. The vulnerability arises from improper neutralization of special elements used in SQL commands (CWE-89), specifically in the 'User' parameter of the 'ValidateUserAndGetData' endpoint. This flaw allows an unauthenticated attacker to inject malicious SQL statements directly into the backend database queries. Exploitation can lead to unauthorized access to sensitive data, modification of database contents, or deletion of critical information. The vulnerability is remotely exploitable without any authentication or user interaction, increasing its risk profile. The CVSS 4.0 base score is 9.3 (critical), reflecting the high impact on confidentiality, integrity, and availability, combined with ease of exploitation. Although no known exploits are currently reported in the wild, the severity and nature of the vulnerability make it a prime target for attackers once exploit code becomes available. The lack of available patches at the time of publication further exacerbates the risk. The vulnerability affects all installations running GIM v11, which is used for identity and access management functions, making the compromise of such systems potentially severe in terms of organizational security posture.

For European organizations using TCMAN GIM v11, this vulnerability poses a significant threat. Successful exploitation could lead to full compromise of identity management data, including user credentials and access rights, undermining the entire security framework. This could facilitate lateral movement within networks, unauthorized data exfiltration, and disruption of critical services. Given the central role of identity management in regulatory compliance (e.g., GDPR), breaches could result in severe legal and financial penalties. Additionally, the ability to delete or alter database records threatens operational continuity and data integrity. The unauthenticated nature of the attack vector means that external threat actors, including cybercriminals and state-sponsored groups, could exploit this vulnerability remotely without prior access, increasing the attack surface. The absence of known exploits currently provides a window for mitigation, but the critical severity demands immediate attention to prevent potential future attacks.

European organizations should immediately conduct an inventory to identify all instances of TCMAN GIM v11 in their environments. Until an official patch is released, implement compensating controls such as network segmentation to isolate GIM servers, restricting inbound access to trusted IP addresses only. Employ Web Application Firewalls (WAFs) with custom rules to detect and block SQL injection patterns targeting the 'ValidateUserAndGetData' endpoint and the 'User' parameter. Conduct thorough input validation and sanitization at the application layer if possible. Monitor logs for unusual database queries or failed login attempts indicative of exploitation attempts. Engage with TCMAN vendor support to obtain timelines for patch releases and apply updates promptly once available. Additionally, review and tighten database permissions to limit the scope of potential damage from SQL injection attacks. Regularly back up critical identity management data and verify backup integrity to enable recovery in case of data deletion or corruption.