CVE-2025-41348 is an SQL injection vulnerability classified under CWE-89, discovered in Informatica del Este's WinPlus software version 24.11.27. The flaw resides in the handling of POST requests sent to the /WinplusPortal/ws/sWinplus.svc/json/getacumper_post endpoint, specifically through the 'val1' and 'cont' parameters. Due to improper neutralization of special elements in SQL commands, attackers can inject malicious SQL code without requiring user interaction or elevated privileges beyond low-level access. This vulnerability allows attackers to perform unauthorized database operations including reading sensitive data, creating new records, updating existing data, or deleting database entries, thereby compromising confidentiality, integrity, and availability of the affected systems. The CVSS 4.0 base score is 8.7, indicating a high severity with network attack vector, low attack complexity, no privileges required, and no user interaction needed. The vulnerability has not yet been exploited in the wild, and no patches have been published at the time of disclosure. The vulnerability was reserved in April 2025 and published in November 2025. The lack of authentication requirement and the direct impact on critical backend databases make this a significant threat. The vulnerability affects only version 24.11.27 of WinPlus, which is used primarily in Latin American markets but has some adoption in European niche sectors. The technical details suggest that the vulnerability is straightforward to exploit via crafted HTTP POST requests, making it a prime target for automated attacks once exploit code becomes available.

For European organizations using WinPlus 24.11.27, this vulnerability poses a serious risk of data breaches, data loss, and operational disruption. Attackers exploiting this flaw can access sensitive business data, intellectual property, or customer information stored in backend databases. The ability to modify or delete data can lead to data integrity issues and service outages, potentially impacting business continuity. Given the network-based attack vector and no need for user interaction, attackers can remotely exploit this vulnerability at scale, increasing the risk of widespread compromise. Organizations in sectors such as finance, manufacturing, or government that rely on WinPlus for critical operations could face regulatory penalties under GDPR if personal data is exposed. The high severity score reflects the broad impact on confidentiality, integrity, and availability. Additionally, the absence of known exploits currently provides a window for proactive defense, but this may change rapidly once exploit code is developed.

1. Monitor vendor communications closely and apply official patches or updates for WinPlus 24.11.27 as soon as they are released. 2. Until patches are available, implement strict input validation and sanitization on the server side to block malicious SQL payloads targeting the 'val1' and 'cont' parameters. 3. Deploy Web Application Firewalls (WAFs) with custom rules to detect and block suspicious POST requests to /WinplusPortal/ws/sWinplus.svc/json/getacumper_post, focusing on SQL injection patterns. 4. Restrict network access to the WinPlus web service endpoint to trusted IP addresses and internal networks where possible. 5. Conduct thorough logging and monitoring of database and application logs to detect anomalous queries or unauthorized access attempts. 6. Segment the network to isolate critical database servers from direct internet exposure. 7. Educate IT and security teams about the vulnerability specifics to ensure rapid incident response if exploitation attempts are detected. 8. Review and tighten database user permissions to minimize the impact of any successful injection attacks.