Is CVE-2018-3969 actively exploited?

No active exploitation of CVE-2018-3969 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2018-3969 be exploited remotely?

No. CVE-2018-3969 requires local access to exploit.

What is the CVSS score of CVE-2018-3969?

CVE-2018-3969 has a CVSS score of 7.8 (HIGH).

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HIGH

CVE-2018-3969

CWE-78Published: March 21, 2019· Updated: Jun 17, 2026

7.8

CVSS v3.1

Official Description

An exploitable vulnerability exists in the verified boot protection of the CUJO Smart Firewall. It is possible to add arbitrary shell commands into the dhcpd.conf file, that persist across reboots and firmware updates, and thus allow for executing unverified commands. To trigger this vulnerability, a local attacker needs to be able to write into /config/dhcpd.conf.

NVD Source

Technical Analysis

CVE-2018-3969 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.