CVE-2026-40719

HIGHNVD 7.57.5—Elevated

7.5

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

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 5.3%
KEV: Not listed

Published

April 15, 2026

Last Modified

April 17, 2026

References (3)

cve@mitrehttps://github.com/samboy/MaraDNS/security/advisories/GHSA-cfc6-vhrv-62cj
cve@mitrehttps://maradns.samiam.org/changelog.html
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/samboy/MaraDNS/security/advisories/GHSA-cfc6-vhrv-62cj

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-670

Data Freshness Timeline

(refreshed 16× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-31 22:30 UTCepss_batch
2026-05-31 22:30 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-31 00:16 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-29 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-28 13:44 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-27 13:40 UTCepss_batch
2026-05-26 13:44 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-26 07:18 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 22:38 UTCepss_batch
2026-05-20 17:12 UTCEG score recompute
2026-05-20 17:12 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2026-40719?

CVE-2026-40719 is a high vulnerability published on April 15, 2026. Deadwood in MaraDNS 3.5.0036 allows attackers to exhaust connection slots via a zone whose authoritative nameserver address cannot be resolved.

When was CVE-2026-40719 disclosed?

CVE-2026-40719 was first published in the National Vulnerability Database on April 15, 2026, with the most recent update on April 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2026-40719 actively exploited?

CVE-2026-40719 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 5.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2026-40719?

CVE-2026-40719 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2026-40719?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-40719, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2026-40719

📅 Published

🔄 Last Modified

🔗 References (3)