CVE-2025-15425 identifies a SQL injection vulnerability in Yonyou KSOA version 9.0, located in the /worksheet/del_user.jsp component that handles HTTP GET requests. The vulnerability arises from improper sanitization of the 'ID' parameter, allowing an attacker to inject malicious SQL statements. This flaw can be exploited remotely without any authentication or user interaction, making it highly accessible to attackers. The SQL injection can lead to unauthorized data access, modification, or deletion, potentially compromising the confidentiality, integrity, and availability of the backend database. The vulnerability has been publicly disclosed, but the vendor has not responded or issued a patch, increasing the risk of exploitation. The CVSS 4.0 score of 6.9 reflects a medium severity, considering the ease of exploitation and the partial impact on system security properties. No known exploits are currently reported in the wild, but the public disclosure may accelerate exploit development. The affected product, Yonyou KSOA, is an enterprise software suite widely used in Asia and increasingly adopted in European markets for business process automation and office management. The lack of vendor response necessitates that organizations implement compensating controls to mitigate risk.

For European organizations, exploitation of this SQL injection vulnerability could result in unauthorized access to sensitive business data, alteration or deletion of critical records, and potential disruption of business operations. Given that Yonyou KSOA is used in sectors such as finance, manufacturing, and government administration, a successful attack could lead to data breaches involving personal or financial information, regulatory non-compliance, and reputational damage. The remote and unauthenticated nature of the exploit increases the threat level, especially for organizations exposing the affected endpoint to the internet. Additionally, attackers could leverage this vulnerability as a foothold for further network intrusion or lateral movement. The absence of a vendor patch means that the risk remains until mitigations are applied, potentially affecting a broad range of European enterprises relying on this software.

Since no official patch is available, European organizations should implement immediate compensating controls. First, apply strict input validation and parameter sanitization at the web application or proxy level to block malicious SQL payloads targeting the 'ID' parameter. Deploy and tune web application firewalls (WAFs) to detect and prevent SQL injection attempts specifically against the /worksheet/del_user.jsp endpoint. Restrict network access to the affected application, limiting exposure to trusted internal networks or VPNs. Conduct thorough code reviews and consider temporary disabling or restricting access to the vulnerable functionality if feasible. Monitor logs for suspicious activity related to SQL injection patterns and anomalous database queries. Plan for an upgrade or migration to a patched or alternative solution once available. Engage with Yonyou or third-party security providers for potential unofficial patches or mitigations. Finally, ensure regular backups and incident response plans are in place to recover from potential compromise.