CVE-2023-39290 in MiVoice Connect
Summary
by MITRE • 08/26/2023
A vulnerability in the Edge Gateway component of Mitel MiVoice Connect through R19.3 SP3 (22.24.5800.0) could allow an authenticated attacker with elevated privileges to conduct an information disclosure attack due to improper configuration. A successful exploit could allow an attacker to view system information.
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Analysis
by VulDB Data Team • 01/24/2026
The vulnerability identified as CVE-2023-39290 represents a critical information disclosure flaw within the Edge Gateway component of Mitel MiVoice Connect software. This issue affects versions through R19.3 SP3 with build 22.24.5800.0, where the security weakness manifests through improper configuration handling that enables authenticated attackers with elevated privileges to gain unauthorized access to sensitive system information. The vulnerability resides in the edge gateway functionality that serves as a critical communication interface within the voice and data networking infrastructure, making it a prime target for attackers seeking to expand their operational capabilities within the network environment.
The technical implementation of this vulnerability stems from inadequate input validation and configuration management within the Edge Gateway component. When properly configured, this component should enforce strict access controls and maintain proper isolation between different network segments. However, the flawed implementation allows an authenticated user with elevated privileges to manipulate system parameters that should normally be restricted. This misconfiguration creates an information disclosure channel that can be exploited through carefully crafted requests that bypass normal access control mechanisms. The vulnerability operates at the application layer and specifically affects the configuration management interfaces that handle system information retrieval and processing.
The operational impact of this vulnerability extends beyond simple information disclosure, as it provides attackers with valuable intelligence that can be leveraged for further exploitation attempts. An attacker who successfully exploits this vulnerability can obtain system information including but not limited to network topology details, configuration parameters, user account information, and potentially sensitive system credentials. This information can significantly aid in planning subsequent attacks, including privilege escalation attempts, lateral movement within the network, or targeted attacks against other system components. The vulnerability is particularly concerning because it requires only authenticated access with elevated privileges, suggesting that existing security controls may be insufficient to prevent unauthorized access to critical system information.
Organizations utilizing Mitel MiVoice Connect R19.3 SP3 should immediately implement comprehensive mitigation strategies to address this vulnerability. The primary recommendation involves applying the latest security patches and updates provided by Mitel, which typically include corrected configuration handling and enhanced access control mechanisms. Additionally, network segmentation and principle of least privilege enforcement should be reviewed and strengthened to limit the potential impact of any successful exploitation attempts. Security monitoring should be enhanced to detect anomalous access patterns and configuration changes that might indicate exploitation attempts. This vulnerability aligns with CWE-200 (Information Disclosure) and represents a potential pathway for attackers to progress through the MITRE ATT&CK framework's initial access and reconnaissance phases, making it a significant concern for enterprise security posture management.
The vulnerability demonstrates the critical importance of proper configuration management in enterprise communication systems and highlights how seemingly minor configuration flaws can create substantial security risks. Organizations should implement regular security assessments of their communication infrastructure, particularly focusing on components that handle privileged access and system information. The incident underscores the necessity of maintaining up-to-date security patches and conducting thorough security reviews of network infrastructure components that may be vulnerable to similar configuration-based attacks. Proper security awareness training for system administrators and network engineers is essential to prevent improper configuration changes that could introduce similar vulnerabilities into the network environment.