CVE-2025-49152 in NMP Web+
Summary
by MITRE • 06/25/2025
MICROSENS NMP Web+ contain JSON Web Tokens (JWT) that do not expire, which could allow an attacker to gain access to the system.
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Analysis
by VulDB Data Team • 06/26/2025
The vulnerability identified as CVE-2025-49152 affects MICROSENS NMP Web+ systems where JSON Web Tokens (JWT) are implemented without proper expiration mechanisms. This represents a critical security flaw that undermines the fundamental principles of authentication and session management within the affected platform. The absence of token expiration creates a persistent access vector that remains valid indefinitely, effectively providing attackers with unlimited privileges once they obtain a valid token. This issue directly violates established security best practices and industry standards for session management, as outlined in the OWASP Top Ten security risks and NIST guidelines for secure authentication systems.
The technical flaw stems from the improper implementation of JWT token lifecycle management within the MICROSENS NMP Web+ application. JWT tokens are designed to be stateless and self-contained authentication mechanisms that should include expiration timestamps to limit their validity period. When these tokens lack expiration fields or when the system fails to validate expiration times, attackers can exploit this weakness to maintain persistent access to the system. The vulnerability operates at the application layer and affects the authentication and authorization mechanisms, making it particularly dangerous as it bypasses normal session timeout protections that would typically invalidate stale credentials. This flaw aligns with CWE-613, which specifically addresses inadequate session expiration, and represents a direct violation of the principle of least privilege in security architecture.
The operational impact of this vulnerability is severe and far-reaching for organizations utilizing MICROSENS NMP Web+ systems. Once an attacker obtains a valid JWT token, they can maintain continuous access to the system without requiring additional authentication attempts, potentially enabling data exfiltration, system manipulation, or lateral movement within the network. The indefinite validity of these tokens means that even if the original user credentials are changed or revoked, the attacker can continue to operate under the compromised token. This creates a persistent threat that can remain undetected for extended periods, potentially leading to significant data breaches, system compromise, or regulatory compliance violations. The vulnerability particularly impacts organizations in critical infrastructure sectors where persistent access could result in operational disruptions or safety risks.
Organizations should immediately implement mitigations to address this vulnerability by configuring proper JWT token expiration policies and ensuring that all tokens include valid expiration timestamps. The recommended approach includes implementing automatic token rotation mechanisms, establishing short-lived tokens with refresh token support, and configuring the system to actively validate token expiration times. Security teams should also conduct comprehensive token lifecycle audits to identify any existing valid tokens that may have been compromised and implement monitoring solutions to detect suspicious authentication patterns. The mitigation strategy should align with NIST SP 800-63B guidelines for authentication and authorization, specifically addressing the need for time-based credential validation. Additionally, implementing multi-factor authentication and privilege separation can provide defense-in-depth measures to limit the potential impact of compromised tokens, while regular security assessments and penetration testing should be conducted to ensure the effectiveness of implemented controls against similar vulnerabilities.