CVE-2025-15427 is a SQL injection vulnerability identified in the Seeyon Zhiyuan OA Web Application System, a widely used office automation platform. The vulnerability resides in the /carManager/carUseDetailList.jsp endpoint, where the CAR_BRAND_NO parameter is improperly sanitized, allowing attackers to inject arbitrary SQL commands. This flaw can be exploited remotely without authentication or user interaction, making it highly accessible to attackers. The injection can lead to unauthorized data access, modification, or deletion, impacting the confidentiality, integrity, and availability of the backend database. The CVSS 4.0 score of 6.9 reflects a medium severity, considering the partial impact on data and system components. Although no official patch or vendor response is available, a public exploit has been released, increasing the risk of exploitation. The vulnerability affects version 20251222 and earlier, indicating that organizations running this or older versions are vulnerable. The lack of vendor engagement suggests that mitigation relies on defensive controls and custom fixes. This vulnerability is critical for organizations relying on Seeyon Zhiyuan OA for sensitive business processes, as it can be leveraged to compromise internal data and disrupt operations.

For European organizations, this vulnerability poses a significant risk to the confidentiality and integrity of sensitive business data managed within the Seeyon Zhiyuan OA system. Exploitation could lead to unauthorized disclosure of corporate information, manipulation of records, or disruption of office automation workflows, potentially affecting business continuity. Given the remote and unauthenticated nature of the attack, threat actors can exploit this vulnerability from anywhere, increasing the attack surface. The availability impact is partial but could escalate if attackers leverage the injection to corrupt or delete critical data. Organizations in sectors with high regulatory requirements, such as finance, healthcare, or government, may face compliance violations and reputational damage if breaches occur. Moreover, the public availability of exploits increases the likelihood of opportunistic attacks, including ransomware or espionage campaigns targeting European enterprises using this software.

1. Implement strict input validation and sanitization on the CAR_BRAND_NO parameter to prevent malicious SQL code injection. 2. Deploy Web Application Firewalls (WAFs) with updated rules to detect and block SQL injection attempts targeting the vulnerable endpoint. 3. Restrict network access to the OA system, limiting exposure to trusted internal networks or VPNs to reduce remote attack vectors. 4. Monitor application logs and database queries for unusual activity indicative of exploitation attempts. 5. If possible, apply custom patches or code fixes to sanitize inputs until an official vendor patch is released. 6. Conduct regular security assessments and penetration tests focusing on injection vulnerabilities in the OA system. 7. Educate IT and security teams about this specific vulnerability and the importance of rapid response. 8. Consider isolating the OA system in a segmented network zone to contain potential breaches. 9. Backup critical data regularly and verify restoration procedures to mitigate impact from potential data corruption. 10. Engage with the vendor or community for updates and patches as they become available.