ZDI-26-078: Deciso OPNsense diag_backup.php filename Command Injection Remote Code Execution Vulnerability
This vulnerability allows network-adjacent attackers to execute arbitrary code 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 string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root.
Other sources
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Deciso OPNsense. Authentication is required to exploit this vulnerability. The ZDI has assigned a CVSS rating of 6.8. The following CVEs are assigned: CVE-2026-2035.
— ZDI
Affected Software
Event History
Frequently Asked Questions
What is the severity of ZDI-26-078?
The severity of ZDI-26-078 is critical due to its potential for remote code execution.
How do I fix ZDI-26-078?
To mitigate ZDI-26-078, make sure to update Deciso OPNsense to the latest version that addresses this vulnerability.
Who is affected by ZDI-26-078?
ZDI-26-078 affects installations of Deciso OPNsense that allow authenticated users to exploit the vulnerability.
What type of vulnerability is ZDI-26-078?
ZDI-26-078 is a command injection vulnerability that enables remote code execution.
Is authentication required to exploit ZDI-26-078?
Yes, authentication is required to exploit the ZDI-26-078 vulnerability.