Mitel MiVoice Office 400 11.0.96.0 Backup Restoration path traversal

Summaryinfo

A vulnerability, which was classified as critical, was found in Mitel MiVoice Office 400 11.0.96.0. Affected by this vulnerability is an unknown functionality of the component Backup Restoration. Such manipulation leads to path traversal. This vulnerability is traded as CVE-2026-104805. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Mitel MiVoice Office 400 11.0.96.0. Affected by this issue is some unknown functionality of the component Backup Restoration. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. Impacted is confidentiality, integrity, and availability. CVE summarizes:

DigitalCanion has discovered a vulnerability in the backup restoration functionality that allows an attacker with access to the configured backup repository to introduce arbitrary files into the system during restoration. The specific flaw exists within the backup restoration mechanism, which fails to properly validate the paths, file types, integrity, and authenticity of files contained within a restored TGZ archive. The application does not perform file-signature verification before extracting the archive, allowing a specially crafted backup to contain attacker-controlled files. An attacker with access to the backup SFTP or other configured repository can therefore provide a malicious TGZ archive that, when restored by the system, may place arbitrary files on the underlying Linux system. Depending on the location and permissions of the extracted files, this behavior can potentially be leveraged to achieve arbitrary code execution with root privileges and compromise the underlying virtual machine. The absence of enforced backup passwords further reduces the protection provided by the backup mechanism and may facilitate unauthorized access to the repository.

The advisory is available at digitalcanion.com. This vulnerability is handled as CVE-2026-104805 since 10/02/2026. The exploitation is known to be easy. The attack may be launched remotely. Additional levels of successful authentication are needed for exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/05/2026). This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Mitel

Name

• MiVoice Office 400

Version

• 11.0.96.0

License

• commercial

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CPE 2.2info

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