CVE-2025-15425 is a SQL injection vulnerability identified in Yonyou KSOA version 9.0, specifically within the /worksheet/del_user.jsp component that handles HTTP GET requests. The vulnerability stems from insufficient input validation or sanitization of the 'ID' parameter, which is directly incorporated into SQL queries. An attacker can remotely manipulate this parameter to inject malicious SQL code, potentially allowing unauthorized access to or modification of the backend database. The vulnerability does not require authentication or user interaction, increasing its risk profile. The CVSS 4.0 base score is 6.9 (medium severity), reflecting the ease of exploitation (network vector, low attack complexity) and the impact on confidentiality, integrity, and availability, albeit limited to low to medium impact levels. The vendor was contacted but has not provided a patch or response, and no known exploits have been observed in the wild yet. This vulnerability could be leveraged to extract sensitive data, alter or delete records, or disrupt service availability. The lack of vendor response increases the urgency for organizations to implement compensating controls or mitigations. Yonyou KSOA is an enterprise resource planning (ERP) and office automation platform widely used in Asia and increasingly in Europe, making this vulnerability relevant to organizations relying on this software for business-critical operations.

For European organizations, exploitation of this SQL injection vulnerability could lead to unauthorized disclosure of sensitive corporate data, including employee information, financial records, or intellectual property. Data integrity could be compromised by unauthorized modification or deletion of database entries, potentially disrupting business processes and causing financial losses. Availability impacts may arise if attackers execute destructive SQL commands or cause database errors, leading to downtime. Given that Yonyou KSOA is used in sectors such as manufacturing, finance, and government administration, the breach of such systems could have cascading effects on supply chains and regulatory compliance. The absence of vendor patches increases the risk of exploitation, especially as threat actors may develop exploits based on the public disclosure. European organizations with limited internal security controls or monitoring may be particularly vulnerable. Additionally, regulatory frameworks like GDPR impose strict requirements on data protection, and a breach resulting from this vulnerability could lead to significant legal and reputational consequences.

Since no official patch is currently available, European organizations using Yonyou KSOA 9.0 should implement immediate compensating controls. First, apply strict input validation and sanitization on all user-supplied parameters, particularly the 'ID' parameter in /worksheet/del_user.jsp, to block malicious SQL payloads. Deploy Web Application Firewalls (WAFs) with custom rules to detect and block SQL injection attempts targeting this endpoint. Conduct thorough code reviews and consider temporary disabling or restricting access to the vulnerable functionality if feasible. Monitor database logs and application logs for unusual query patterns or errors indicative of injection attempts. Network segmentation should be enforced to limit access to the affected application from untrusted networks. Organizations should also prepare incident response plans specific to SQL injection attacks and maintain regular backups of critical data to enable recovery in case of compromise. Engage with Yonyou support channels for updates and patches, and consider alternative software solutions if the vendor remains unresponsive. Finally, raise awareness among developers and IT staff about secure coding practices to prevent similar vulnerabilities.