CVE-2025-15420 is a SQL injection vulnerability identified in Yonyou KSOA version 9.0, a widely used enterprise resource planning (ERP) and office automation software suite. The vulnerability exists in the /worksheet/agent_work_report.jsp file, where the ID parameter is improperly sanitized, allowing attackers to inject malicious SQL commands. This injection flaw can be exploited remotely without authentication or user interaction, enabling attackers to manipulate backend database queries. Potential consequences include unauthorized data access, data modification, or deletion, and possibly further compromise of the underlying system. The vulnerability has been publicly disclosed, and exploit code is available, although no known widespread exploitation has been reported to date. The vendor has not responded to notifications, and no official patches have been released, leaving affected systems exposed. The CVSS 4.0 base score is 6.9, reflecting a medium severity level due to the ease of exploitation and potential impact on confidentiality, integrity, and availability. The vulnerability affects only version 9.0 of Yonyou KSOA, and no other versions have been reported as vulnerable. Given the critical role of ERP systems in business operations, exploitation could disrupt workflows and compromise sensitive corporate data.

The SQL injection vulnerability in Yonyou KSOA 9.0 poses significant risks to organizations relying on this software for business process automation. Successful exploitation can lead to unauthorized disclosure of sensitive business data, including financial records, employee information, and operational details. Attackers could alter or delete data, undermining data integrity and potentially causing operational disruptions. Since the vulnerability can be exploited remotely without authentication, it increases the attack surface and risk of automated attacks or mass exploitation campaigns. The lack of vendor response and patches prolongs exposure, increasing the window for attackers to develop and deploy exploits. Organizations in sectors such as finance, manufacturing, government, and large enterprises using Yonyou KSOA are particularly vulnerable. The compromise of ERP systems can also facilitate lateral movement within networks, leading to broader organizational impact. Overall, the vulnerability threatens confidentiality, integrity, and availability of critical business systems and data.

Organizations should immediately conduct an inventory to identify any deployments of Yonyou KSOA version 9.0. Until a vendor patch is available, implement strict network-level access controls to restrict access to the affected application, especially the /worksheet/agent_work_report.jsp endpoint. Employ web application firewalls (WAFs) with custom rules to detect and block SQL injection attempts targeting the ID parameter. Conduct thorough input validation and sanitization on all user-supplied data within the application if source code access and modification are possible. Monitor logs for suspicious activity indicative of SQL injection attempts. Consider deploying database activity monitoring to detect anomalous queries. Engage with Yonyou support channels for updates and patches. Plan for rapid patch deployment once available. Additionally, conduct regular backups of critical data and test restoration procedures to mitigate potential data loss. Educate development and security teams about secure coding practices to prevent similar vulnerabilities in future releases.