CVE-2023-25598 in MiVoice Connect
Summary
by MITRE • 05/24/2023
A vulnerability in the conferencing component of Mitel MiVoice Connect through 19.3 SP2 and 20.x, 21.x, and 22.x through 22.24.1500.0 could allow an unauthenticated attacker to conduct a reflected cross-site scripting (XSS) attack due to insufficient validation for the home.php page. A successful exploit could allow an attacker to execute arbitrary scripts.
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Analysis
by VulDB Data Team • 11/01/2025
The vulnerability identified as CVE-2023-25598 represents a critical reflected cross-site scripting flaw within the conferencing functionality of Mitel MiVoice Connect software versions up to 19.3 SP2 and 20.x through 22.24.1500.0. This security weakness specifically targets the home.php page within the application's web interface, where inadequate input validation permits malicious payloads to be injected and subsequently executed in the context of authenticated users' browsers. The flaw exists in the conferencing component which forms a core part of the unified communications platform, making it particularly concerning for organizations relying on this system for business-critical communications.
The technical nature of this vulnerability stems from improper sanitization of user-supplied input parameters that are processed by the home.php page. When an attacker crafts a malicious URL containing specially formatted script code and tricks a user into clicking the link, the web application fails to properly validate or escape the input before rendering it in the browser context. This reflected XSS condition allows attackers to inject malicious JavaScript code that executes in the victim's browser session, potentially enabling unauthorized actions such as session hijacking, data theft, or redirection to malicious sites. The vulnerability operates without requiring authentication, making it particularly dangerous as attackers can exploit it against any user who interacts with the maliciously crafted link.
The operational impact of this vulnerability extends beyond simple script execution, as it could enable attackers to escalate privileges and gain unauthorized access to sensitive communication data within the Mitel MiVoice Connect environment. Organizations using affected versions of the software face potential exposure to man-in-the-middle attacks, where attackers could intercept and manipulate conference calls, access participant information, or even compromise the entire communication infrastructure. The attack surface is broad since the conferencing component is typically accessible to multiple users within an organization, increasing the likelihood of successful exploitation. This vulnerability directly aligns with CWE-79, which categorizes cross-site scripting flaws as a fundamental web application security weakness, and maps to ATT&CK technique T1566.001 for initial access through spearphishing attachments or links, making it a significant threat vector for enterprise environments.
Mitigation strategies for this vulnerability should prioritize immediate software updates to the latest available versions of Mitel MiVoice Connect where the XSS flaw has been patched. Organizations should implement comprehensive input validation measures at the application level, including proper HTML escaping and content security policy headers to prevent script execution. Network-level protections such as web application firewalls can provide additional defense-in-depth measures, while security awareness training for end users can help reduce the risk of clicking malicious links. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in other components of the communication infrastructure. Additionally, implementing strict access controls and monitoring for suspicious URL parameters can help detect and prevent exploitation attempts, while maintaining detailed audit logs of user activities in the conferencing system provides valuable forensic data for incident response activities.