CVE-2026-45158CRITICAL 9.1EPSS p40.6%

CVE-2026-45158CVE-2026-45158

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.

Scoring

CVSS 3.19.1 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS0.53% probability of exploitation · percentile 40.6% · 2026-06-19T12:03:05Z
Published2026-05-13
Last modified2026-05-15

Underlying weaknesses· 1

CWE-88

References

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

1

TypeTargetConfidenceTier
WeaknessImproper Neutralization of Argument Delimiters in a Command ('Argument Injection')cwe-880%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.