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.

INFO

Published Date :

2026-02-20T22:13:02.904Z

Last Modified :

2026-02-24T14:59:50.931Z

Source :

zdi
AFFECTED PRODUCTS

The following products are affected by CVE-2026-2035 vulnerability.

Vendors Products
Deciso
  • Opnsense
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-2035.

URL Resource
https://github.com/opnsense/core/commit/cb15c935137d05c86a1e6cf12af877e9c32a23af cve-icon cve-icon
https://www.zerodayinitiative.com/advisories/ZDI-26-078/ cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact