High 7.5Published Apr 15, 2026

CVE-2026-40719Deadwood in MaraDNS 3.5.0036 allows attackers to exhaust connection slots via a zone whose authoritative nameserver address cannot be resolved.

Updated under an hour ago (Oct 27, 2026, 4:40 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-670
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: mitre
NVD analysis: Awaiting Analysis
Record last updated: Apr 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

MaraDNS MaraDNS maradns:maradns (from the name)	3.5.0036	CNA record

References

References

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

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.