CVE-2025-13698 MEDIUM

CVE-2025-13698: Deciso OPNsense diag_backup.php filename Directory Traversal Arbitrary File Creation Vulnerability

Vendor Deciso
Product OPNsense
Weakness CWE-22 · Path traversal
Published December 23, 2025
Last update December 24, 2025
View on NVD All CVEs

CVSS base score

4.5/10
Attack vector Adjacent
Attack complexity Low
Privileges required High
User interaction None
Confidentiality None
Integrity High

CVSS vector

CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N

What the vulnerability does

01Description

Deciso OPNsense diag_backup.php filename Directory Traversal Arbitrary File Creation Vulnerability. This vulnerability allows network-adjacent attackers to create arbitrary files on affected installations of Deciso OPNsense. Authentication is required to exploit this vulnerability. The specific flaw exists within the handling of backup configuration files. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this vulnerability to create files in the context of root. Was ZDI-CAN-28133.

Key dates

02Disclosure timeline

December 23, 2025 CVE published
December 24, 2025 Record updated