CVE-2026-104806: Mitel MiVoice Office 400 System Logs Path Traversal Information Disclosure
DigitalCanion has discovered a path traversal vulnerability that allows an attacker to access files outside of the intended directory.
The specific flaw exists within the Maintenance → System Logs functionality of the web management portal listening on TCP port 443. The application fails to properly validate user-supplied file paths, allowing an attacker to manipulate the requested path and traverse the underlying directory structure.
By exploiting this vulnerability, an attacker can access and download files located outside the intended system logs directory, including potentially sensitive system and application files.
Affected Software
Event History
Frequently Asked Questions
Who is exposed to this issue?
Instances of the MiVoice Office 400 web management portal reachable on TCP port 443 are exposed through the Maintenance → System Logs functionality. The provided information does not state whether authentication or any particular network position is required.
What can an attacker obtain by exploiting the flaw?
An attacker can manipulate a requested file path to traverse outside the intended system logs directory and download files elsewhere on the underlying system. This may expose sensitive system and application files.
How can defenders determine whether they may be affected?
Review whether the MiVoice Office 400 web management portal is enabled and accessible on TCP port 443, and whether users can access Maintenance → System Logs. The available information does not provide affected versions, fixed versions, or detection indicators.