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.
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 24 Dec 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Wed, 24 Dec 2025 12:00:00 +0000

Type Values Removed Values Added
First Time appeared Opnsense
Opnsense opnsense
Vendors & Products Opnsense
Opnsense opnsense

Tue, 23 Dec 2025 21:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Deciso OPNsense diag_backup.php filename Directory Traversal Arbitrary File Creation Vulnerability
Weaknesses CWE-22
References
Metrics cvssV3_0

{'score': 4.5, 'vector': 'CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N'}


Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: zdi

Published:

Updated: 2025-12-24T16:11:29.726Z

Reserved: 2025-11-25T21:38:19.636Z

Link: CVE-2025-13698

cve-icon Vulnrichment

Updated: 2025-12-24T16:11:26.453Z

cve-icon NVD

Status : Received

Published: 2025-12-23T22:15:44.657

Modified: 2025-12-23T22:15:44.657

Link: CVE-2025-13698

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2025-12-24T11:51:15Z

Weaknesses