High
pdns-recursor — security advisory
An attacker spoofing answers to ECS enabled requests sent out by the Recursor has a chance of success higher than non-ECS enabled queries. The updated version include various mitigations against spoofing attempts of ECS enabled queries by chaining ECS enabled requests and enforcing stricter validation of the received answers. The most strict mitigation done when the new setting outgoing.edns_subnet_harden (old style name edns-subnet-harden) is enabled.
- Products
- pdns-recursor
- Affected versions
- 3.7.3-1, 4.0.0~alpha1-1, 4.0.0~alpha1-2, 4.0.0~alpha2-2, 4.0.0~alpha2-2ubuntu0.1, 4.0.0~alpha2-2ubuntu0.1+esm1, 4.0.6-1, 4.0.6-1build1, 4.0.7-1, 4.1.1-1, 4.1.1-1build1, 4.1.1-2, 4.1.1-2ubuntu0.1~esm1, 4.2.0-6, 4.2.1-1, 4.2.1-1build1, 4.2.1-1build2, 4.2.1-1ubuntu0.1~esm1, 4.4.2-3, 4.6.0-1ubuntu1, 4.6.0-1ubuntu1+esm1, 4.9.0-2, 4.9.1-4, 4.9.2-1, 4.9.2-1build1, 4.9.2-2, 4.9.3-1, 4.9.3-1build2, 4.9.3-1build3, 5.2.0-5, 5.2.2-1, 5.2.2-2, 5.2.4-2, 5.2.4-2build2, 5.3.1-1, 5.3.3-1, 5.3.4-1, 5.3.4-1build1, 5.3.4-2, 5.3.5-1, 5.4.3-1, 5.4.5-1
- Fixed versions
- Not specified
- CVEs
- CVE-2025-30192
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:27 UTC · Revision 1
Source evidence
An attacker spoofing answers to ECS enabled requests sent out by the Recursor has a chance of success higher than non-ECS enabled queries. The updated version include various mitigations against spoofing attempts of ECS enabled queries by chaining ECS enabled requests and enforcing stricter validation of the received answers. The most strict mitigation done when the new setting outgoing.edns_subnet_harden (old style name edns-subnet-harden) is enabled.
osv:UBUNTU-CVE-2025-30192
pdns-recursor
Fixed versions: Not specified
pdns-recursor
Fixed versions: Not specified
pdns-recursor
Fixed versions: Not specified
pdns-recursor
Fixed versions: Not specified
pdns-recursor
Fixed versions: Not specified
pdns-recursor
Fixed versions: Not specified
pdns-recursor
Fixed versions: Not specified
pdns-recursor
Fixed versions: Not specified
Complete source record
{
"id": "047c2d6ad3e80ff7d2d83a98058891693bd13c5ba82243d754218593b42242d1",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2025-30192",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2025-30192",
"summary": "An attacker spoofing answers to ECS enabled requests sent out by the Recursor has a chance of success higher than non-ECS enabled queries. The updated version include various mitigations against spoofing attempts of ECS enabled queries by chaining ECS enabled requests and enforcing stricter validation of the received answers. The most strict mitigation done when the new setting outgoing.edns_subnet_harden (old style name edns-subnet-harden) is enabled.",
"evidence": "osv:UBUNTU-CVE-2025-30192",
"products": [
{
"name": {
"value": "pdns-recursor",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.7.3-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.0.0~alpha1-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.0.0~alpha1-2",
"evidence": "/affected/0/versions"
},
{
"value": "4.0.0~alpha2-2",
"evidence": "/affected/0/versions"
},
{
"value": "4.0.0~alpha2-2ubuntu0.1",
"evidence": "/affected/0/versions"
},
{
"value": "4.0.0~alpha2-2ubuntu0.1+esm1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "pdns-recursor",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.0.6-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.0.6-1build1",
"evidence": "/affected/1/versions"
},
{
"value": "4.0.7-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.1.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.1.1-1build1",
"evidence": "/affected/1/versions"
},
{
"value": "4.1.1-2",
"evidence": "/affected/1/versions"
},
{
"value": "4.1.1-2ubuntu0.1~esm1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "pdns-recursor",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.2.0-6",
"evidence": "/affected/2/versions"
},
{
"value": "4.2.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "4.2.1-1build1",
"evidence": "/affected/2/versions"
},
{
"value": "4.2.1-1build2",
"evidence": "/affected/2/versions"
},
{
"value": "4.2.1-1ubuntu0.1~esm1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "pdns-recursor",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.4.2-3",
"evidence": "/affected/3/versions"
},
{
"value": "4.6.0-1ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "4.6.0-1ubuntu1+esm1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "pdns-recursor",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.9.0-2",
"evidence": "/affected/4/versions"
},
{
"value": "4.9.1-4",
"evidence": "/affected/4/versions"
},
{
"value": "4.9.2-1",
"evidence": "/affected/4/versions"
},
{
"value": "4.9.2-1build1",
"evidence": "/affected/4/versions"
},
{
"value": "4.9.2-2",
"evidence": "/affected/4/versions"
},
{
"value": "4.9.3-1",
"evidence": "/affected/4/versions"
},
{
"value": "4.9.3-1build2",
"evidence": "/affected/4/versions"
},
{
"value": "4.9.3-1build3",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "pdns-recursor",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "5.2.0-5",
"evidence": "/affected/5/versions"
},
{
"value": "5.2.2-1",
"evidence": "/affected/5/versions"
},
{
"value": "5.2.2-2",
"evidence": "/affected/5/versions"
},
{
"value": "5.2.4-2",
"evidence": "/affected/5/versions"
},
{
"value": "5.2.4-2build2",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "pdns-recursor",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "5.3.5-1",
"evidence": "/affected/6/versions"
},
{
"value": "5.4.3-1",
"evidence": "/affected/6/versions"
},
{
"value": "5.4.5-1",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "pdns-recursor",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "5.2.4-2build2",
"evidence": "/affected/7/versions"
},
{
"value": "5.3.1-1",
"evidence": "/affected/7/versions"
},
{
"value": "5.3.3-1",
"evidence": "/affected/7/versions"
},
{
"value": "5.3.4-1",
"evidence": "/affected/7/versions"
},
{
"value": "5.3.4-1build1",
"evidence": "/affected/7/versions"
},
{
"value": "5.3.4-2",
"evidence": "/affected/7/versions"
},
{
"value": "5.3.5-1",
"evidence": "/affected/7/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2025-30192",
"aliases": [
"UBUNTU-CVE-2025-30192"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "pdns-recursor",
"purl": "pkg:deb/ubuntu/pdns-recursor?arch=source&distro=esm-apps%2Fxenial",
"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"versions": [
"3.7.3-1",
"4.0.0~alpha1-1",
"4.0.0~alpha1-2",
"4.0.0~alpha2-2",
"4.0.0~alpha2-2ubuntu0.1",
"4.0.0~alpha2-2ubuntu0.1+esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-30192.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "pdns-recursor",
"binary_version": "4.0.0~alpha2-2ubuntu0.1+esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "pdns-recursor",
"purl": "pkg:deb/ubuntu/pdns-recursor?arch=source&distro=esm-apps%2Fbionic",
"ecosystem": "Ubuntu:Pro:18.04:LTS"
},
"versions": [
"4.0.6-1",
"4.0.6-1build1",
"4.0.7-1",
"4.1.1-1",
"4.1.1-1build1",
"4.1.1-2",
"4.1.1-2ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-30192.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "pdns-recursor",
"binary_version": "4.1.1-2ubuntu0.1~esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "pdns-recursor",
"purl": "pkg:deb/ubuntu/pdns-recursor?arch=source&distro=esm-apps%2Ffocal",
"ecosystem": "Ubuntu:Pro:20.04:LTS"
},
"versions": [
"4.2.0-6",
"4.2.1-1",
"4.2.1-1build1",
"4.2.1-1build2",
"4.2.1-1ubuntu0.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-30192.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "pdns-recursor",
"binary_version": "4.2.1-1ubuntu0.1~esm1"
}
]
}
},
{
"ranges": [
{
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}
]
}
],
"package": {
"name": "pdns-recursor",
"purl": "pkg:deb/ubuntu/pdns-recursor?arch=source&distro=esm-apps%2Fjammy",
"ecosystem": "Ubuntu:Pro:22.04:LTS"
},
"versions": [
"4.4.2-3",
"4.6.0-1ubuntu1",
"4.6.0-1ubuntu1+esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-30192.json"
},
"ecosystem_specific": {
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{
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},
{
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],
"package": {
"name": "pdns-recursor",
"purl": "pkg:deb/ubuntu/pdns-recursor?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"4.9.0-2",
"4.9.1-4",
"4.9.2-1",
"4.9.2-1build1",
"4.9.2-2",
"4.9.3-1",
"4.9.3-1build2",
"4.9.3-1build3"
],
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},
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{
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{
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"package": {
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"purl": "pkg:deb/ubuntu/pdns-recursor?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"5.2.0-5",
"5.2.2-1",
"5.2.2-2",
"5.2.4-2",
"5.2.4-2build2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-30192.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "pdns-recursor",
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}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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}
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}
],
"package": {
"name": "pdns-recursor",
"purl": "pkg:deb/ubuntu/pdns-recursor?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"5.3.5-1",
"5.4.3-1",
"5.4.5-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-30192.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "pdns-recursor",
"binary_version": "5.4.5-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "pdns-recursor",
"purl": "pkg:deb/ubuntu/pdns-recursor?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"5.2.4-2build2",
"5.3.1-1",
"5.3.3-1",
"5.3.4-1",
"5.3.4-1build1",
"5.3.4-2",
"5.3.5-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-30192.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "pdns-recursor",
"binary_version": "5.3.5-1"
}
]
}
}
],
"modified": "2026-10-17T12:56:50.338899909Z",
"provider": "osv",
"upstream": [
"CVE-2025-30192"
],
"references": [
"https://ubuntu.com/security/CVE-2025-30192",
"https://www.cve.org/CVERecord?id=CVE-2025-30192",
"https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2025-04.html"
]
},
"related_cves": [
{
"value": "CVE-2025-30192",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 356455,
"published_at": "2025-07-21T13:15:00+00:00"
}