High
Security advisory
A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authentication. The Samba AD DC, could become confused about the user a ticket represents if it did not strictly require a Kerberos PAC and always use the SIDs found within. The result could include total domain compromise.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-25719
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 05:45 UTC · Revision 1
Source evidence
A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authentication. The Samba AD DC, could become confused about the user a ticket represents if it did not strictly require a Kerberos PAC and always use the SIDs found within. The result could include total domain compromise.
osv:CVE-2020-25719
Complete source record
{
"id": "bef5370915efb65c2b0042c8cfa09eac008dcea2a7432405a4834b858722db8a",
"url": "https://osv.dev/vulnerability/CVE-2020-25719",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-25719",
"summary": "A flaw was found in the way Samba, as an Active Directory Domain Controller, implemented Kerberos name-based authentication. The Samba AD DC, could become confused about the user a ticket represents if it did not strictly require a Kerberos PAC and always use the SIDs found within. The result could include total domain compromise.",
"evidence": "osv:CVE-2020-25719",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2020-25719",
"aliases": [
"CVE-2020-25719"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/samba-team/samba",
"type": "GIT",
"events": [
{
"introduced": "df33344d8eb40221d60c99931690703a11d91bc2"
},
{
"fixed": "db11778b57610e24324aa4342f89918f66157d71"
},
{
"introduced": "9b49519cae3e967af9ea48dc5fcfb6c145e31db4"
},
{
"fixed": "9312b1832e5a808a63fc7f9e7d6e70348cc9eb86"
},
{
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},
{
"fixed": "7d0c030d4233974c4b9463dad44efdb05e6186f1"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.0.0"
},
{
"fixed": "4.13.14"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.14.0"
},
{
"fixed": "4.14.10"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.15.0"
},
{
"fixed": "4.15.2"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"ldb-2.3.2",
"samba-4.14.9",
"samba-4.15.1",
"ldb-2.4.1",
"ldb-2.3.1",
"samba-4.14.8",
"samba-4.15.0",
"samba-4.14.7",
"samba-4.14.6",
"samba-4.14.5",
"samba-4.14.3",
"samba-4.14.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-25719.json"
}
}
],
"modified": "2026-10-24T10:30:33.035285312Z",
"provider": "osv",
"references": [
"https://security.gentoo.org/glsa/202309-06",
"https://www.samba.org/samba/security/CVE-2020-25719.html",
"https://bugzilla.redhat.com/show_bug.cgi?id=2019732"
],
"provider_metadata": {
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{
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"cpe:2.3:o:canonical:ubuntu_linux:21.04:*:*:*:*:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:21.10:*:*:*:*:*:*:*"
],
"vendor_product": "canonical:ubuntu_linux",
"extracted_events": [
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"range": [
{
"introduced": "20.04"
},
{
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},
{
"introduced": "21.04"
},
{
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},
{
"introduced": "21.10"
},
{
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}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
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"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "9.0"
},
{
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},
{
"introduced": "10.0"
},
{
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}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
"cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
"cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:fedora",
"extracted_events": [
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{
"introduced": "33"
},
{
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},
{
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{
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{
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{
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}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
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"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux",
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},
{
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],
"vendor_product": "redhat:enterprise_linux_desktop",
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},
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}
],
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}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_eus",
"extracted_events": [
{
"range": [
{
"introduced": "8.2"
},
{
"last_affected": "8.2"
},
{
"introduced": "8.4"
},
{
"last_affected": "8.4"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:7.0:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_for_ibm_z_systems",
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{
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{
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},
{
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},
{
"introduced": "8.0"
},
{
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}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.2:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.4:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_for_ibm_z_systems_eus",
"extracted_events": [
{
"range": [
{
"introduced": "8.2"
},
{
"last_affected": "8.2"
},
{
"introduced": "8.4"
},
{
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}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_for_power_big_endian",
"extracted_events": [
{
"range": [
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},
{
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}
],
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]
},
{
"cpes": [
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"cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_for_power_little_endian",
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{
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]
},
{
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],
"vendor_product": "redhat:enterprise_linux_for_power_little_endian_eus",
"extracted_events": [
{
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{
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{
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{
"introduced": "8.4"
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{
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],
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]
},
{
"cpes": [
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],
"vendor_product": "redhat:enterprise_linux_for_scientific_computing",
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],
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},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_server_aus",
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{
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{
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],
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},
{
"cpes": [
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],
"vendor_product": "redhat:enterprise_linux_server_tus",
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{
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{
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{
"introduced": "8.4"
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]
},
{
"cpes": [
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"cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:*"
],
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{
"range": [
{
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]
},
{
"cpes": [
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],
"vendor_product": "redhat:enterprise_linux_workstation",
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],
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}
},
"related_cves": [
{
"value": "CVE-2020-25719",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 433166,
"published_at": "2022-02-18T18:15:08.563+00:00"
}