Vulnerability · Published Oct 5, 2026 · Assigned by NCSC.ch
CVE-2026-104810Mitel MiVoice Office 400 File Management File Browser path traversal vulnerability
High 8.4
In plain English
A high-severity security flaw in Mitel MiVoice Office 400 from Mitel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).
Official description
This vulnerability allows remote attackers to delete sensitive files on vulnerable installations of Mitel MiVoice Office 400. Authentication is required to exploit this vulnerability. The specific flaw exists within the web portal listening on TCP port 443, under Maintenance → File Management → File Browser, which is affected by a directory traversal vulnerability. By exploiting this vulnerability, an authenticated attacker can access and delete files outside of the intended directory, including files belonging to the Mitel application and the underlying Linux system. Deleting critical system or application files can result in a denial-of-service condition affecting the underlying system.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mitel | Mitel MiVoice Office 400 | 11.0.96.0 |
Weakness: CWE-31 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P/AU:Y/U:Amber