CVE-2023-31458 in MiVoice Connect
Summary
by MITRE • 05/25/2023
A vulnerability in the Edge Gateway component of Mitel MiVoice Connect versions 19.3 SP2 (22.24.1500.0) and earlier could allow an unauthenticated attacker with internal network access to authenticate with administrative privileges, because initial installation does not enforce a password change. A successful exploit could allow an attacker to make arbitrary configuration changes and execute arbitrary commands.
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Analysis
by VulDB Data Team • 12/25/2025
The vulnerability identified as CVE-2023-31458 represents a critical authentication flaw within the Edge Gateway component of Mitel MiVoice Connect systems. This weakness specifically affects versions 19.3 SP2 and earlier, where the initial installation process fails to mandate a password change for administrative accounts. The vulnerability stems from a fundamental failure in the default configuration process, creating a persistent security weakness that can be exploited by attackers with internal network access. This flaw directly violates security best practices and industry standards such as those outlined in CWE-653, which addresses insufficient password requirements and weak authentication mechanisms.
The technical exploitation of this vulnerability occurs through a straightforward privilege escalation attack vector. An unauthenticated attacker who gains access to the internal network can leverage the default administrative credentials to authenticate with full administrative privileges. This initial access point allows for complete system compromise, enabling attackers to modify system configurations, install malicious software, and execute arbitrary commands. The flaw operates at the authentication layer, making it particularly dangerous as it bypasses normal access controls and authentication mechanisms that would typically prevent unauthorized administrative access.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it provides attackers with complete control over the affected systems. Administrative privileges enable comprehensive system manipulation including but not limited to network configuration changes, user account modifications, and the ability to deploy malware or backdoors. This level of access can result in significant data breaches, service disruption, and potential lateral movement within the network. The vulnerability is particularly concerning for organizations relying on Mitel MiVoice Connect for their voice communication infrastructure, as it could lead to complete compromise of their telephony systems and potentially expose sensitive communication channels.
Security mitigation strategies for CVE-2023-31458 should focus on immediate remediation through version updates to Mitel MiVoice Connect 19.3 SP3 or later, which addresses the password enforcement issue. Organizations should also implement network segmentation to limit internal access to critical systems and establish robust monitoring for unauthorized administrative access attempts. The vulnerability aligns with ATT&CK technique T1078 which covers valid accounts and privilege escalation, and CWE-798 which addresses hardcoded credentials. Additionally, security teams should conduct comprehensive audits of all administrative accounts, enforce strong password policies, and implement multi-factor authentication where possible to reduce the attack surface and prevent exploitation of similar credential-based vulnerabilities.