CVE-2026-45158

critical · 9.1

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.

9.1

CVSS

0.5%

EPSS (exploit prob.)

44th

EPSS percentile

2026-05-13

Published

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Weaknesses

CWE-88

Affected products

Vendor	Product	Affected versions
opnsense	opnsense	< 26.1.8

Check a specific version with /api/v1/cve/match.

References

https://github.com/opnsense/core/security/advisories/GHSA-5rx3-w735-74wm

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-45158