CVE-2025-41346 in WinPlus
Summary
by MITRE • 11/18/2025
Faulty authorization control in software WinPlus v24.11.27 by Informática del Este that allows another user to be impersonated simply by knowing their 'numerical ID', meaning that an attacker could compromise another user's account, thereby affecting the confidentiality, integrity, and availability of the data stored in the application.
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Analysis
by VulDB Data Team • 11/20/2025
The vulnerability identified as CVE-2025-41346 represents a critical authorization flaw within WinPlus v24.11.27, a software solution developed by Informática del Este. This issue stems from inadequate access control mechanisms that permit unauthorized users to impersonate legitimate system participants through simple knowledge of a target user's numerical identifier. The flaw fundamentally undermines the application's security model by eliminating proper authentication checks that should validate user identities before granting access rights. Such a vulnerability creates a pathway for malicious actors to bypass normal security protocols and assume the identity of other users within the system.
The technical implementation of this authorization bypass occurs through a design weakness where the system relies solely on numerical user IDs for session management and access determination. This approach violates fundamental security principles that require multi-factor authentication or robust cryptographic verification before granting access privileges. The vulnerability manifests as a direct consequence of insufficient input validation and authorization logic, allowing attackers to manipulate session parameters or request resources associated with different user accounts. This flaw can be exploited through simple parameter manipulation techniques that leverage the predictable nature of numerical identifiers within the application's architecture.
The operational impact of this vulnerability extends beyond simple unauthorized access, creating cascading effects that compromise the core security triad of confidentiality, integrity, and availability. An attacker who successfully impersonates another user gains access to sensitive data that should be restricted to authorized personnel only, potentially exposing personal information, financial records, or proprietary business data. The integrity of the system becomes compromised as the attacker can modify or delete data associated with the impersonated account, while availability may be affected through denial-of-service attacks or resource exhaustion techniques. This vulnerability particularly affects organizations that rely on WinPlus for critical business operations, as it provides a direct route for data breaches and system compromise.
Mitigation strategies for CVE-2025-41346 should prioritize immediate implementation of robust authorization controls that eliminate reliance on numerical identifiers for user impersonation. Organizations must implement proper session management protocols that include cryptographic tokens, multi-factor authentication, and comprehensive access control lists that verify user identities through multiple authentication factors. The system should enforce strict input validation that prevents manipulation of user identifiers and implement proper audit logging to detect unauthorized access attempts. Security patches should address the root cause by strengthening the authorization logic to require explicit authentication before granting access rights, aligning with established security frameworks such as those outlined in the CWE-285 category for improper authorization controls. Additionally, implementing principle of least privilege access models and regular security assessments will help prevent similar vulnerabilities from emerging in future system versions. The remediation process should include comprehensive testing of authorization controls and validation that all user sessions are properly authenticated before access is granted, ensuring that the system no longer permits unauthorized impersonation through simple numerical ID knowledge.