CVE-2025-40718 in Gateway
Summary
by MITRE • 07/08/2025
Improper error handling vulnerability in versions prior to 4.7.0 of Quiter Gateway by Quiter. This vulnerability allows an attacker to send malformed payloads to generate error messages containing sensitive information.
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Analysis
by VulDB Data Team • 10/18/2025
The CVE-2025-40718 vulnerability represents a critical improper error handling flaw within Quiter Gateway versions prior to 4.7.0, exposing systems to potential information disclosure risks. This vulnerability stems from the gateway's inadequate processing of malformed payloads that trigger error conditions, resulting in the unintentional exposure of sensitive data within error messages. The flaw exists in the application's error reporting mechanisms, where insufficient sanitization of input validation failures allows attackers to craft specific payloads that elicit detailed error responses containing system internals, configuration details, or other confidential information. Such error messages may inadvertently reveal database connection strings, file paths, stack traces, or other system-specific details that could significantly aid malicious actors in subsequent attack phases.
The technical implementation of this vulnerability aligns with CWE-209, which specifically addresses improper error handling that reveals sensitive information to end users or attackers. When Quiter Gateway encounters malformed input that cannot be properly processed, the system generates error responses without adequate filtering of sensitive data components. This behavior creates a direct pathway for information leakage that violates fundamental security principles of least privilege and defense in depth. The vulnerability operates at the application layer and can be exploited through various input vectors including HTTP requests, API calls, or direct protocol interactions with the gateway service. Attackers can systematically send crafted payloads designed to trigger specific error conditions, thereby harvesting sensitive information that would otherwise remain hidden within normal operational procedures.
The operational impact of this vulnerability extends beyond simple information disclosure, creating potential pathways for more sophisticated attacks within the attacker's kill chain. According to ATT&CK framework domain T1211, this vulnerability enables initial reconnaissance activities where adversaries gather system intelligence through error message analysis. The exposure of sensitive data through error responses can facilitate further exploitation attempts including privilege escalation, lateral movement, or targeted attacks against underlying systems. Organizations utilizing vulnerable versions of Quiter Gateway face significant risk of unauthorized information access, potential compliance violations, and increased attack surface due to the exposure of internal system details. The vulnerability's impact is particularly severe in environments where the gateway serves as a critical access point to enterprise networks or sensitive data repositories.
Mitigation strategies for CVE-2025-40718 should prioritize immediate remediation through upgrading to Quiter Gateway version 4.7.0 or later, which incorporates proper error handling mechanisms. Organizations should implement comprehensive input validation procedures that prevent malformed payloads from reaching error-generating code paths, while ensuring that all error messages are sanitized before display. The implementation of generic error responses that do not reveal system internals represents a fundamental security control that aligns with security best practices outlined in NIST SP 800-163 and OWASP Top Ten. Additional defensive measures include logging error conditions for security monitoring purposes while ensuring that sensitive information is not included in audit trails, implementing proper error handling frameworks that suppress stack traces, and conducting regular vulnerability assessments to identify similar issues in other components of the system architecture. Network segmentation and access controls should also be reviewed to limit potential impact should attackers successfully exploit this vulnerability.