ZDI-CAN-28133: ZDI-25-1022: 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.
Other sources
This vulnerability allows network-adjacent attackers to create arbitrary files on affected installations of Deciso OPNsense. Authentication is required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 4.5. The following CVEs are assigned: CVE-2025-13698.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-CAN-28133?
The severity of ZDI-CAN-28133 is rated at 4.5 on the CVSS scale.
How can I fix ZDI-CAN-28133?
To fix ZDI-CAN-28133, ensure you apply the latest security patches provided by Deciso for OPNsense.
What type of access is required to exploit ZDI-CAN-28133?
Authentication is required for network-adjacent attackers to exploit ZDI-CAN-28133.
What does ZDI-CAN-28133 allow attackers to do?
ZDI-CAN-28133 allows attackers to create arbitrary files on affected installations of Deciso OPNsense.
Which software is affected by ZDI-CAN-28133?
Deciso OPNsense is the affected software for the vulnerability ZDI-CAN-28133.