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.

Source published

5 Oct 2026 08:24:22 UTC

Source modified

5 Oct 2026 13:52:56 UTC

Observed here

23 Oct 2026 15:48:27 UTC

Source terms

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CVSS 4.0 · 5.5 CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/AU:Y/R:A/V:D/RE:L/U:Amber