CVE-2026-104805

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.

CVSS

No CVSS.

References

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

Configurations

No configuration.

History

05 Oct 2026, 09:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-05 09:17

Updated : 2026-10-06 15:18

NVD link : CVE-2026-104805

Mitre link : CVE-2026-104805

CVE.ORG link : CVE-2026-104805

JSON object : View

Products Affected

No product.

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CWE-73

External Control of File Name or Path

CWE-345

Insufficient Verification of Data Authenticity

CWE-434

Unrestricted Upload of File with Dangerous Type

CWE-494

Download of Code Without Integrity Check

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