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CVE-2026-40719

Published: Apr 15, 2026Updated: Apr 17, 2026 Sources: CVE List NVDCWE-670
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.4%
Top 70.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

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

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-670

Affected Products

MaraDNSMaraDNS
On-prem
Networking Infrastructure / dns-dhcp-ntp
maradnsoss-projectNetworking Infrastructureaka maradns

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

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

Timeline

Published
Apr 15, 2026
Last Updated
Apr 17, 2026

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