CVE-2026-2035
MEDIUMCVSS Vector
CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
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2Tags
Description
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. Was ZDI-CAN-28131.
Analysis
Remote code execution in Deciso OPNsense's backup functionality allows authenticated network-adjacent attackers to execute arbitrary commands with root privileges through insufficient input validation in the diag_backup.php file. An attacker with valid credentials can inject malicious commands into backup filename parameters to achieve code execution on the affected system. …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Validate input sanitization for user-controlled parameters.
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