CVE-2026-104806: Mitel MiVoice Office 400 System Logs Path Traversal Information Disclosure

Vulnerability summary

CVE-2026-104806 is a medium (CVSS 5.5) Path Traversal: 'dir\..\..\filename' vulnerability in mitel mitel mivoice office 400. EPSS estimates a 0.31% chance of exploitation in the next 30 days, higher than 24.2% of scored vulnerabilities.

Timeline

1. 05-10-2026
   PublishedVulnerability first disclosed.
2. 05-10-2026
   Last modifiedVulnerability information updated.

Description

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.

• CWE-31Path Traversal: 'dir\..\..\filename'The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize 'dir\..\..\filename' (multiple internal backslash dot dot) sequences that can resolve to a location that is outside of that directory.