OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.8, unsanitized user input is passed to the DHCP configuration of the configured interface, which is processed by a shell script, allowing remote code execution as root on the underlying operating system. This vulnerability is fixed in 26.1.8.
History

Thu, 14 May 2026 00:00:00 +0000

Type Values Removed Values Added
First Time appeared Opnsense
Opnsense core
Vendors & Products Opnsense
Opnsense core

Wed, 13 May 2026 22:15:00 +0000

Type Values Removed Values Added
Description OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.8, unsanitized user input is passed to the DHCP configuration of the configured interface, which is processed by a shell script, allowing remote code execution as root on the underlying operating system. This vulnerability is fixed in 26.1.8.
Title OPNsense: Command Injection via Attacker-Controlled DHCP Config
Weaknesses CWE-88
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-05-13T21:54:31.679Z

Updated: 2026-05-13T21:54:31.679Z

Reserved: 2026-05-08T20:44:38.964Z

Link: CVE-2026-45158

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-05-13T22:16:46.363

Modified: 2026-05-13T22:16:46.363

Link: CVE-2026-45158

cve-icon Redhat

No data.