CVE-2026-104810 Mitel MiVoice Office 400 File Management File Browser path traversal vulnerability
Authenticated attackers can delete critical system files via path traversal in the web portal, causing denial of service on Mitel MiVoice Office 400.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-104810?
CVE-2026-104810 is a high-severity path traversal vulnerability in Mitel MiVoice Office 400, published on 5 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
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.
Weakness: CWE-31
Which versions are affected by CVE-2026-104810?
How do I fix CVE-2026-104810?
No fix has been published for CVE-2026-104810 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-104810 being exploited?
There is no known exploitation of CVE-2026-104810 in the wild and no public exploit code.
Sources
Also known as GHSA-w6gr-fq2r-hcjh.