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CVE-2026-2035

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CVE-2026-2035

Published: Feb 20, 2026

Modified: Feb 24, 2026

PUBLISHED

CVSS v3.0

6.8

MEDIUM

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.

VendorProductVersions

Deciso

OPNsense

affected
25.7

Weaknesses (CWE)

CWE-78

CVSS v3.0 Details

CVSS v3.0 Vector

CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

ZDI-26-078
x_research-advisory
vendor-provided URL
vendor-advisory

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