What is CVE-2026-40719?

CVE-2026-40719 is a high-severity vulnerability in Maradns, classified under Always-Incorrect Control Flow Implementation. CVSS score: 7.5/10. Published 2026-04-15.

How severe is CVE-2026-40719?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Maradns

CVE-2026-40719

Deadwood in MaraDNS 3.5.0036 allows attackers to exhaust connection slots via a zone whose authoritative nameserver address cannot be resolved.

EPSS: 0.000 (5.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Maradns — versions 3.5.0036

Weakness classification (CWE)

CWE-670 — Always-Incorrect Control Flow Implementation

References

github.com/samboy/MaraDNS/security/advisories/GHSA-cfc6-vhrv-62cj
maradns.samiam.org/changelog.html

Frequently asked questions

What is CVE-2026-40719?: CVE-2026-40719 is a high-severity vulnerability in Maradns, classified under Always-Incorrect Control Flow Implementation. CVSS score: 7.5/10. Published 2026-04-15.
How severe is CVE-2026-40719?: High severity. CVSS v3 base score is 7.5 out of 10.