CVE-2025-41348 identifies a critical SQL injection vulnerability in WinPlus version 24.11.27, a product developed by Informática del Este. 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. These inputs are improperly sanitized, allowing attackers to inject malicious SQL commands. The vulnerability is classified under CWE-89, indicating improper neutralization of special elements in SQL commands. Exploiting this vulnerability requires no user interaction and no authentication but does require low privileges, which suggests that an attacker with minimal access can leverage this flaw remotely over the network (AV:N). The CVSS 4.0 score of 8.7 reflects high severity, with high impact on confidentiality, integrity, and availability (VC:H, VI:H, VA:H). Attackers can potentially retrieve sensitive data, alter database contents, or delete data, leading to significant operational disruption. Although no public exploits are currently known, the vulnerability's characteristics make it a prime target for attackers aiming to compromise enterprise databases. The lack of an official patch at the time of publication increases the urgency for organizations to implement compensating controls. The vulnerability affects only version 24.11.27 of WinPlus, so organizations running this specific version are at risk. The vulnerability was reserved in April 2025 and published in November 2025, indicating a recent discovery and disclosure timeline.

For European organizations, the impact of CVE-2025-41348 can be substantial. Organizations using WinPlus 24.11.27 may face unauthorized data breaches, data manipulation, or data loss, affecting business continuity and regulatory compliance, especially under GDPR. Confidential customer or operational data could be exposed or altered, leading to reputational damage and potential financial penalties. The availability of critical systems relying on WinPlus could be disrupted if attackers delete or corrupt database contents. Given the vulnerability requires no user interaction and can be exploited remotely, the attack surface is broad. Sectors such as finance, healthcare, manufacturing, and public administration that rely on WinPlus for database management are particularly vulnerable. The absence of known exploits currently provides a window for proactive defense, but the high severity score indicates that exploitation could have severe consequences if attackers develop or deploy exploits. The vulnerability also poses risks to supply chain security if third-party vendors use affected WinPlus versions.

1. Immediate mitigation should focus on network-level protections such as deploying Web Application Firewalls (WAFs) with rules to detect and block SQL injection attempts targeting the '/WinplusPortal/ws/sWinplus.svc/json/getacumper_post' endpoint and the 'val1' and 'cont' parameters. 2. Implement strict input validation and sanitization on all user-supplied data, especially for the affected endpoint, to neutralize special SQL characters. 3. Restrict access to the WinPlus service to trusted internal networks or VPNs to reduce exposure to external attackers. 4. Monitor logs for unusual database queries or POST requests to the vulnerable endpoint to detect potential exploitation attempts. 5. Apply the principle of least privilege to database accounts used by WinPlus, limiting their permissions to only necessary operations to reduce impact if compromised. 6. Coordinate with Informática del Este for timely patch deployment once available; prioritize testing and applying updates to version 24.11.27 installations. 7. Conduct security awareness and incident response exercises focusing on SQL injection attack scenarios. 8. Consider temporary disabling or restricting the vulnerable service endpoint if feasible until a patch is released. 9. Review and enhance backup and recovery procedures to ensure rapid restoration in case of data compromise.