Home

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.

PUBLISHED Reserved 2026-02-06 | Published 2026-02-20 | Updated 2026-02-24 | Assigner zdi




MEDIUM: 6.8CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Product status

Default status
unknown

25.7
affected

References

www.zerodayinitiative.com/advisories/ZDI-26-078/ (ZDI-26-078)

github.com/...ommit/cb15c935137d05c86a1e6cf12af877e9c32a23af (vendor-provided URL) vendor-advisory

cve.org (CVE-2026-2035)

nvd.nist.gov (CVE-2026-2035)

Download JSON