CVE-2026-45158
OPNsense: Command Injection via Attacker-Controlled DHCP Config
CVSS Score
9.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-88 |
| Vendor | opnsense |
| Product | core |
| Published | May 13, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
opnsense / core
< 26.1.8