CVE-2025-59818 CRITICAL

CVE-2025-59818: Authenticated Remote Code Execution via the file name of an uploaded file

Vendor Zenitel
Product TCIS-3+
Published February 4, 2026
Last update February 4, 2026
View on NVD All CVEs

CVSS base score

10.0/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

This vulnerability allows authenticated attackers to execute arbitrary commands on the underlying system using the file name of an uploaded file.

Key dates

02Disclosure timeline

February 4, 2026 CVE published
February 4, 2026 Record updated