CVE-2025-13698

Deciso OPNsense diag_backup.php filename Directory Traversal Arbitrary File Creation Vulnerability

Published Dec 23, 2025 CVSS 3.0 · 4.5 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

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

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

Weaknesses

Sources

Status
PUBLISHED
Assigner
zdi
Published
Updated
Dec 24, 2025, 4:11 PM
Reserved
Nov 25, 2025, 9:38 PM
Status
Deferred
Published
Dec 23, 2025, 10:15 PM
Modified
Oct 19, 2026, 10:10 PM