HIGH

CVE-2018-4011

CVSS v3

7.5

HIGH

EPSS Score

1.3 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2018-4011 yet.

Full record on NVD

Description

An exploitable integer underflow vulnerability exists in the mdnscap binary of the CUJO Smart Firewall, version 7003. When parsing SRV records in an mDNS packet, the "RDLENGTH" value is handled incorrectly, leading to an out-of-bounds access that crashes the mdnscap process. An unauthenticated attacker can send an mDNS message to trigger this vulnerability.

Technical details

Published: 2019-03-21

Frequently asked questions

What is CVE-2018-4011?

Is CVE-2018-4011 actively exploited?

Active exploitation of CVE-2018-4011 has not been confirmed. Its EPSS score was 1.3% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-4011?

CVE-2018-4011 has a CVSS v3 base score of 7.5 (HIGH severity).

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