VULNERABILITY INTELLIGENCE

CVE-2026-45158

CVSS score9.1 CRITICAL
EPSS probability0.53%
CISA KEVNot currently listed
Published2026-05-13
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

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.

Weakness classification

  • CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

Primary references