CVE-2025-41348 is an SQL injection vulnerability identified in Informática del Este's WinPlus software, specifically version 24.11.27. The vulnerability arises from improper neutralization of special characters in SQL commands (CWE-89) within the '/WinplusPortal/ws/sWinplus.svc/json/getacumper_post' endpoint. Attackers can exploit this by sending crafted POST requests with malicious payloads in the 'val1' and 'cont' parameters, which are not properly sanitized before being incorporated into SQL queries. This allows attackers to perform unauthorized actions on the backend database, including reading sensitive data, creating new records, updating existing data, or deleting information. The CVSS 4.0 score of 8.7 reflects a high severity, with network attack vector (AV:N), low attack complexity (AC:L), no privileges required (PR:L, low privileges), no user interaction (UI:N), and high impact on confidentiality, integrity, and availability (VC:H, VI:H, VA:H). The vulnerability does not require user interaction but does require some level of privileges, indicating that attackers with limited access could escalate their capabilities significantly. No patches or exploit code are currently publicly available, but the vulnerability is published and recognized by INCIBE. The lack of segmentation or input validation in the affected endpoint makes this a critical risk for organizations relying on WinPlus for business operations.

For European organizations, exploitation of this vulnerability could lead to severe data breaches, including exposure of sensitive customer or operational data, unauthorized modification of records, or complete loss of database integrity. This can disrupt business continuity, damage reputation, and lead to regulatory penalties under GDPR due to compromised personal data. Organizations in sectors such as finance, healthcare, manufacturing, and critical infrastructure that utilize WinPlus are particularly vulnerable. The ability to execute arbitrary SQL commands remotely without user interaction increases the risk of automated or targeted attacks. Additionally, the potential for data deletion or corruption could result in operational downtime and costly recovery efforts. Given the high CVSS score and the critical nature of database integrity, the impact on confidentiality, integrity, and availability is substantial, making this a priority vulnerability to address in European environments.

1. Immediate implementation of input validation and sanitization on the 'val1' and 'cont' parameters to prevent injection of malicious SQL code. 2. Deploy a Web Application Firewall (WAF) configured to detect and block SQL injection attempts targeting the vulnerable endpoint. 3. Restrict database user privileges associated with the WinPlus application to the minimum necessary, preventing unauthorized data manipulation. 4. Monitor database logs and application logs for unusual queries or access patterns indicative of exploitation attempts. 5. If possible, isolate the WinPlus application server within a segmented network zone to limit exposure. 6. Engage with Informática del Este to obtain patches or updates addressing this vulnerability as soon as they become available. 7. Conduct regular security assessments and penetration testing focused on SQL injection vectors in WinPlus deployments. 8. Educate system administrators and security teams about this vulnerability and ensure incident response plans include steps for SQL injection incidents.