CVE-2025-40654 is a critical SQL injection vulnerability identified in the DM Corporative CMS developed by Dmacroweb. The vulnerability arises due to improper neutralization of special elements in SQL commands (CWE-89), specifically affecting the 'name' and 'cod' parameters in the /antbuspre.asp endpoint. This flaw allows an unauthenticated attacker to inject malicious SQL code directly into database queries without any user interaction or privileges. Exploitation can lead to unauthorized retrieval, creation, modification, or deletion of database records, potentially compromising the confidentiality, integrity, and availability of the CMS data. The CVSS 4.0 base score of 9.3 reflects the ease of remote exploitation (network vector), no required privileges or user interaction, and a high impact on all security properties (confidentiality, integrity, and availability). Although no known exploits are currently reported in the wild, the vulnerability's critical nature and the lack of available patches make it a significant risk for organizations using this CMS. The affected version is listed as '0', which likely indicates an early or initial release version of the product, suggesting that all current deployments may be vulnerable unless mitigations are applied.

For European organizations using DM Corporative CMS, this vulnerability poses a severe risk. Successful exploitation could lead to data breaches involving sensitive corporate or customer information, unauthorized data manipulation, or complete database compromise. This could disrupt business operations, damage reputation, and result in regulatory non-compliance, especially under GDPR requirements concerning data protection and breach notification. The ability to alter or delete data could also impact business continuity and trustworthiness of the CMS-managed content. Given the critical severity and remote exploitability without authentication, attackers could leverage this vulnerability to gain persistent access or pivot to other internal systems if the CMS is integrated into broader IT infrastructure.

Since no official patches are currently available, European organizations should implement immediate compensating controls. These include: 1) Restricting external access to the /antbuspre.asp endpoint via network segmentation or firewall rules to limit exposure. 2) Employing Web Application Firewalls (WAFs) with custom rules to detect and block SQL injection patterns targeting the 'name' and 'cod' parameters. 3) Conducting thorough input validation and sanitization at the application or proxy level to neutralize malicious input. 4) Monitoring database logs and application logs for unusual query patterns or errors indicative of injection attempts. 5) Planning for rapid patch deployment once an official fix is released by Dmacroweb. 6) Considering migration to alternative CMS platforms with stronger security postures if the vendor support is uncertain. Additionally, organizations should review and enforce the principle of least privilege on database accounts used by the CMS to limit potential damage.