ubuntu-cve-2026-40719
Vulnerability from osv_ubuntu
Published
2026-04-15 07:16
Modified
2026-05-14 11:40
Summary
Details
Deadwood in MaraDNS 3.5.0036 allows attackers to exhaust connection slots via a zone whose authoritative nameserver address cannot be resolved.
Severity
7.5 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "duende",
"binary_version": "2.0.13-1ubuntu0.1~esm1"
},
{
"binary_name": "maradns",
"binary_version": "2.0.13-1ubuntu0.1~esm1"
},
{
"binary_name": "maradns-deadwood",
"binary_version": "2.0.13-1ubuntu0.1~esm1"
},
{
"binary_name": "maradns-docs",
"binary_version": "2.0.13-1ubuntu0.1~esm1"
},
{
"binary_name": "maradns-zoneserver",
"binary_version": "2.0.13-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "maradns",
"purl": "pkg:deb/ubuntu/maradns@2.0.13-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.0.11-1",
"2.0.13-1",
"2.0.13-1ubuntu0.1~esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "duende",
"binary_version": "2.0.13-1.2ubuntu0.1~esm1"
},
{
"binary_name": "maradns",
"binary_version": "2.0.13-1.2ubuntu0.1~esm1"
},
{
"binary_name": "maradns-deadwood",
"binary_version": "2.0.13-1.2ubuntu0.1~esm1"
},
{
"binary_name": "maradns-docs",
"binary_version": "2.0.13-1.2ubuntu0.1~esm1"
},
{
"binary_name": "maradns-zoneserver",
"binary_version": "2.0.13-1.2ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "maradns",
"purl": "pkg:deb/ubuntu/maradns@2.0.13-1.2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.0.13-1.2",
"2.0.13-1.2ubuntu0.1~esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "duende",
"binary_version": "2.0.13-1.4+deb11u1build0.20.04.1"
},
{
"binary_name": "maradns",
"binary_version": "2.0.13-1.4+deb11u1build0.20.04.1"
},
{
"binary_name": "maradns-deadwood",
"binary_version": "2.0.13-1.4+deb11u1build0.20.04.1"
},
{
"binary_name": "maradns-docs",
"binary_version": "2.0.13-1.4+deb11u1build0.20.04.1"
},
{
"binary_name": "maradns-zoneserver",
"binary_version": "2.0.13-1.4+deb11u1build0.20.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "maradns",
"purl": "pkg:deb/ubuntu/maradns@2.0.13-1.4+deb11u1build0.20.04.1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.0.13-1.2build1",
"2.0.13-1.4",
"2.0.13-1.4build1",
"2.0.13-1.4+deb11u1build0.20.04.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "duende",
"binary_version": "2.0.13-1.4+deb11u1build0.22.04.1"
},
{
"binary_name": "maradns",
"binary_version": "2.0.13-1.4+deb11u1build0.22.04.1"
},
{
"binary_name": "maradns-deadwood",
"binary_version": "2.0.13-1.4+deb11u1build0.22.04.1"
},
{
"binary_name": "maradns-docs",
"binary_version": "2.0.13-1.4+deb11u1build0.22.04.1"
},
{
"binary_name": "maradns-zoneserver",
"binary_version": "2.0.13-1.4+deb11u1build0.22.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "maradns",
"purl": "pkg:deb/ubuntu/maradns@2.0.13-1.4+deb11u1build0.22.04.1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.0.13-1.4build2",
"2.0.13-1.4+deb11u1build0.22.04.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "duende",
"binary_version": "2.0.13-1.6"
},
{
"binary_name": "maradns",
"binary_version": "2.0.13-1.6"
},
{
"binary_name": "maradns-deadwood",
"binary_version": "2.0.13-1.6"
},
{
"binary_name": "maradns-docs",
"binary_version": "2.0.13-1.6"
},
{
"binary_name": "maradns-zoneserver",
"binary_version": "2.0.13-1.6"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "maradns",
"purl": "pkg:deb/ubuntu/maradns@2.0.13-1.6?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.0.13-1.4ubuntu1",
"2.0.13-1.5",
"2.0.13-1.6"
]
}
],
"aliases": [],
"details": "Deadwood in MaraDNS 3.5.0036 allows attackers to exhaust connection slots via a zone whose authoritative nameserver address cannot be resolved.",
"id": "UBUNTU-CVE-2026-40719",
"modified": "2026-05-14T11:40:57Z",
"published": "2026-04-15T07:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-40719"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-40719"
},
{
"type": "REPORT",
"url": "https://github.com/samboy/MaraDNS/security/advisories/GHSA-cfc6-vhrv-62cj"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-40719"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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