CVE-2026-2035

6.8 mediumEPSS 1.6%

Medium (6.8). EPSS 1.6% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.0

6.8 medium

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

EPSS: 1.6% chance of exploitation in the next 30 days; higher than 75% of CVEs (scores of 2026-10-31)
CWE: CWE-78
Published: 2026-02-20
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

https://github.com/opnsense/core/commit/cb15c935137d05c86a1e6cf12af877e9c32a23af
https://www.zerodayinitiative.com/advisories/ZDI-26-078/

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