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Critical severity9.1NVD Advisory· Published May 13, 2026· Updated Jun 17, 2026

CVE-2026-45158

CVE-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.

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Affected products

2
  • Opnsense/Opnsense2 versions
    cpe:2.3:a:opnsense:opnsense:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:opnsense:opnsense:*:*:*:*:*:*:*:*range: <26.1.8
    • (no CPE)range: <26.1.8

Patches

Vulnerability mechanics

References

1

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