Description
DigitalCanion SA has discovered a vulnerability that allows remote attackers to execute arbitrary code on affected installations of the product. Authentication may be required to exploit this vulnerability.




The specific flaw exists within the Configuration → Services → Music on Hold functionality of the web portal listening on TCP port 443. The application is intended to allow users to upload WAV audio files but fails to properly validate the uploaded file type. An attacker can exploit this behavior to upload a malicious shared object (.so) instead of a WAV file. When the uploaded file is subsequently processed by the affected component, attacker-controlled code is loaded and executed in the context of the affected process. This can result in remote code execution and potentially full compromise of the underlying Linux system.
Published: 2026-10-05
Score: 8.4 High
EPSS: < 1% Very Low
KEV: No
Impact: Remote Code Execution
Action: Immediate Patch
AI Analysis

Impact

A flaw in the Music on Hold functionality of Mitel MiVoice Office 400 allows a remote attacker to upload a malicious shared object file that is accepted as a WAV file, causing the backend to load and execute attacker‑controlled code within the service process and ultimately compromising the Linux system.

Affected Systems

Any installation of Mitel MiVoice Office 400, specifically the Music on Hold service exposed via the web portal on TCP port 443. No specific version numbers are listed in the advisory.

Risk and Exploitability

The vulnerability has a CVSS score of 8.4, indicating high severity, and there is no EPSS data or KEV listing. Authentication to the web portal is required, so the breach is not fully anonymous; once authentication is obtained, the attacker can achieve remote code execution. The likely attack vector is via the HTTPS interface for uploading media files, though the exact path is inferred from the description.

Generated by OpenCVE AI on October 5, 2026 at 10:42 UTC.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply a Mitel-released patch or upgrade Mitel MiVoice Office 400 when available.
  • Configure the web portal to reject any upload that is not a valid WAV file and to reject non‑audio file types.
  • Place the music‑on‑hold directory in a non‑executable location or set file permissions so that uploaded files cannot be executed by the service process.

Generated by OpenCVE AI on October 5, 2026 at 10:42 UTC.

Tracking

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Advisories

No advisories yet.

History

Mon, 05 Oct 2026 13:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Mon, 05 Oct 2026 09:00:00 +0000

Type Values Removed Values Added
Description DigitalCanion SA has discovered a vulnerability that allows remote attackers to execute arbitrary code on affected installations of the product. Authentication may be required to exploit this vulnerability. The specific flaw exists within the Configuration → Services → Music on Hold functionality of the web portal listening on TCP port 443. The application is intended to allow users to upload WAV audio files but fails to properly validate the uploaded file type. An attacker can exploit this behavior to upload a malicious shared object (.so) instead of a WAV file. When the uploaded file is subsequently processed by the affected component, attacker-controlled code is loaded and executed in the context of the affected process. This can result in remote code execution and potentially full compromise of the underlying Linux system.
Title Mitel MiVoice Office 400 Music on Hold WAV File Upload Code Execution
Weaknesses CWE-20
CWE-434
CWE-829
CWE-94
References
Metrics cvssV4_0

{'score': 8.4, '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'}

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: NCSC.ch

Published:

Updated: 2026-10-05T12:38:56.148Z

Reserved: 2026-10-02T13:47:47.693Z

Link: CVE-2026-104811

cve-icon Vulnrichment

Updated: 2026-10-05T12:37:46.986Z

cve-icon NVD

Status : Received

Published: 2026-10-05T09:17:10.290

Modified: 2026-10-05T13:16:51.940

Link: CVE-2026-104811

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-05T10:45:21Z

Weaknesses
  • CWE-20

    Improper Input Validation

  • CWE-434

    Unrestricted Upload of File with Dangerous Type

  • CWE-829

    Inclusion of Functionality from Untrusted Control Sphere

  • CWE-94

    Improper Control of Generation of Code ('Code Injection')