CVE-2025-4281 is an information disclosure vulnerability identified in version 7 of the Sixun Shanghui Group Business Management System developed by Shenzhen Sixun Software. The vulnerability resides in an unspecified component of the API endpoint /api/GylOperator/LoadData. An attacker can remotely exploit this flaw without requiring user interaction or elevated privileges, as indicated by the CVSS vector (AV:N/AC:L/AT:N/PR:L/UI:N). The vulnerability allows unauthorized access to sensitive information, which could include business data or user-related information, depending on the API's function. The CVSS score of 5.3 (medium severity) reflects a moderate impact primarily on confidentiality, with no direct impact on integrity or availability. Although no public exploits are currently known to be actively used in the wild, the exploit details have been disclosed publicly, increasing the risk of exploitation by malicious actors. The vulnerability does not require authentication but does require low privileges, suggesting that an attacker might need some minimal access or could exploit it through a misconfiguration or weak access control. The lack of a patch link indicates that a fix may not yet be available, emphasizing the need for mitigation through other means. Given the business management nature of the affected system, the information disclosed could be sensitive corporate data, potentially impacting business operations and privacy compliance.

For European organizations using the Sixun Shanghui Group Business Management System, this vulnerability poses a risk of unauthorized disclosure of sensitive business information. Such information leaks could lead to competitive disadvantage, exposure of confidential client or employee data, and potential violations of data protection regulations such as the GDPR. The medium severity suggests that while the vulnerability does not directly compromise system integrity or availability, the confidentiality breach alone can have significant reputational and legal consequences. European companies relying on this software for business management may face operational disruptions if attackers leverage disclosed information for further attacks such as social engineering or targeted intrusions. Additionally, the remote exploitability without user interaction increases the threat surface, especially if the system is exposed to the internet or accessible from less secure network segments. The absence of a patch means organizations must act swiftly to implement compensating controls to prevent data leakage and monitor for suspicious activity.

1. Restrict network access to the affected API endpoint (/api/GylOperator/LoadData) by implementing strict firewall rules or network segmentation to limit exposure only to trusted internal networks or VPN users. 2. Enforce strong authentication and authorization controls around the API, ensuring that only properly authenticated and authorized users can access sensitive endpoints, even if the vulnerability exists. 3. Conduct thorough logging and monitoring of API access to detect unusual or unauthorized requests that could indicate exploitation attempts. 4. If possible, disable or limit the functionality of the vulnerable API endpoint until a vendor patch is available. 5. Engage with Shenzhen Sixun Software for updates or patches and apply them promptly once released. 6. Perform regular security assessments and penetration testing focusing on API security to identify similar vulnerabilities proactively. 7. Educate internal teams about the risk and signs of exploitation to enhance incident response readiness. 8. Consider deploying Web Application Firewalls (WAFs) with custom rules to detect and block suspicious API calls targeting the vulnerable endpoint.