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Critical · 9.1 CVE-2026-45158 EUVD-2026-30202

OPNsense: Command Injection via Attacker-Controlled DHCP Config

Published May 13, 2026 · Updated May 14, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
opnsense core < 26.1.8 —

Advisories 1

References