CVE-2026-45158

CRITICAL

OPNsense: Command Injection via Attacker-Controlled DHCP Config

Title source: cna
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v3 9.1
EPSS 0.0053
EPSS Percentile 40.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-88
Status published
Products (2)
opnsense/core < 26.1.8
opnsense/opnsense < 26.1.8
Published May 13, 2026
Tracked Since May 14, 2026