CVE-2025-15493 identifies a SQL injection vulnerability in the RainyGao DocSys product, specifically affecting all versions up to 2.02.36. The vulnerability resides in an unspecified function within the XML mapping file src/com/DocSystem/mapping/ReposAuthMapper.xml, where the argument searchWord is improperly sanitized, allowing attackers to inject malicious SQL commands. This injection flaw can be exploited remotely without requiring authentication or user interaction, increasing the attack surface significantly. The vulnerability's CVSS 4.0 base score is 5.3, reflecting medium severity, with network attack vector, low attack complexity, no privileges or user interaction required, and partial impact on confidentiality, integrity, and availability. The vendor was notified early but has not issued any response or patch, and a public exploit is available, raising the risk of exploitation. The lack of patch and vendor engagement means organizations must rely on alternative mitigations. The vulnerability could allow attackers to extract sensitive data, modify or delete records, or disrupt service availability by manipulating backend SQL queries through the vulnerable parameter.

The SQL injection vulnerability in DocSys can lead to unauthorized data access, data modification, or deletion, compromising the confidentiality, integrity, and availability of organizational data managed by DocSys. Attackers could leverage this flaw to extract sensitive documents, escalate privileges, or disrupt document management operations, potentially impacting business continuity. Since the exploit requires no authentication and can be launched remotely, the risk of widespread exploitation is significant, especially in environments where DocSys is exposed to the internet or untrusted networks. Organizations relying on DocSys for critical document workflows may face operational disruptions, data breaches, and compliance violations. The absence of vendor patches increases the window of exposure, making timely mitigation essential to reduce risk.

Given the absence of an official patch, organizations should implement the following specific mitigations: 1) Restrict network access to DocSys instances by enforcing strict firewall rules and limiting exposure to trusted internal networks only. 2) Employ Web Application Firewalls (WAFs) with custom rules to detect and block SQL injection patterns targeting the searchWord parameter. 3) Conduct thorough input validation and sanitization at the application or proxy level if possible, especially for parameters interacting with database queries. 4) Monitor logs for suspicious query patterns or repeated failed attempts indicative of injection attempts. 5) Consider deploying database activity monitoring to detect anomalous SQL commands. 6) Plan for migration or replacement of DocSys if vendor support remains unavailable. 7) Isolate DocSys environments to minimize lateral movement in case of compromise. 8) Educate security teams about this vulnerability and ensure incident response plans include this threat scenario.