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.
Published: 2026-05-13
Score: 9.1 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 15 May 2026 16:30:00 +0000

Type Values Removed Values Added
First Time appeared Opnsense opnsense
CPEs cpe:2.3:a:opnsense:opnsense:*:*:*:*:*:*:*:*
Vendors & Products Opnsense opnsense

Thu, 14 May 2026 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


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:

Updated: 2026-05-14T12:22:09.189Z

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

Link: CVE-2026-45158

cve-icon Vulnrichment

Updated: 2026-05-14T12:22:05.971Z

cve-icon NVD

Status : Analyzed

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

Modified: 2026-05-15T16:19:38.600

Link: CVE-2026-45158

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-14T00:00:07Z

Weaknesses