# 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.

- **Severity:** High 8.4 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Oct 2026
- **Updated:** 5 Oct 2026
- **Also known as:** GHSA-w6gr-fq2r-hcjh

## 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 (Path Traversal: 'dir\..\..\filename')

## 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.

## Is CVE-2026-104810 being exploited?

There is no known exploitation of CVE-2026-104810 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-104810 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-104810 in the wild and no public exploit code.

Affected product: Mitel MiVoice Office 400. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-104810/ (Markdown: https://insights.sbomify.com/CVE-2026-104810/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-104810
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-104810
- OSV: https://osv.dev/vulnerability/CVE-2026-104810

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-104810/
Summaries are generated and may contain mistakes; the official description above is the record.