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    CVE-2026-45158

    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.

    Published:May 13, 2026
    Last Modified:May 15, 2026
    EPS:May 13, 2026
    EPSS Score:0.00232
    CVSS Score:9.1

    Affected Products

    Vendor
    Opnsense
    Product
    Core
    Vendor
    Opnsense
    Product
    Opnsense

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-53581 (CVSS 9) — OPNsense is a FreeBSD based firewall and routing platform. Prior to version 26.1.9 of opnsense/core and versio…
    CVE-2026-44194 (CVSS 9.1) — OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.8, an authenticated Remote Code Execu…
    CVE-2026-44195 (CVSS 5.3) — OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.7, a logic flaw in the OPNsense locko…
    CVE-2026-44193 (CVSS 9.1) — OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.7, the XMLRPC method opnsense.restore…
    CVE-2026-34578 (CVSS 8.2) — OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.6, OPNsense's LDAP authentication con…
    CVE-2026-30868 (CVSS 6.3) — OPNsense is a FreeBSD based firewall and routing platform. Prior to 26.1.4, multiple OPNsense MVC API endpoint…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High