High
smb4k — security advisory
An External Control of File Name or Path vulnerability in smb4k allowsl ocal users to perform a local root exploit via smb4k mounthelper if they can access and control the contents of a Samba shareThis issue affects smb4k: from ? before 4.0.5.
- Products
- smb4k
- Affected versions
- 1.1.2-1, 2.0.1-1, 2.0.2-1, 2.1.0-1, 3.0.2-1, 3.0.3-1, 3.0.4-0ubuntu1, 3.0.4-1, 3.1.1-1, 3.1.2-0ubuntu1, 3.2.2-1, 3.2.4-1, 3.2.5-1, 3.2.5-1build1, 3.2.5-1build2, 4.0.0-1, 4.0.4-1, 4.0.5-1, 4.0.5-1build1, 4.0.6-1
- Fixed versions
- Not specified
- CVEs
- CVE-2025-66003
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:49 UTC · Revision 1
Source evidence
An External Control of File Name or Path vulnerability in smb4k allowsl ocal users to perform a local root exploit via smb4k mounthelper if they can access and control the contents of a Samba shareThis issue affects smb4k: from ? before 4.0.5.
osv:UBUNTU-CVE-2025-66003
smb4k
Fixed versions: Not specified
smb4k
Fixed versions: Not specified
smb4k
Fixed versions: Not specified
smb4k
Fixed versions: Not specified
smb4k
Fixed versions: Not specified
smb4k
Fixed versions: Not specified
smb4k
Fixed versions: Not specified
smb4k
Fixed versions: Not specified
Complete source record
{
"id": "478ccab2172c7c7c5535a9a5dd4609fbfc57d7eb29c9f899c7cfb8c05b2b2d23",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2025-66003",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2025-66003",
"summary": "An External Control of File Name or Path vulnerability in smb4k allowsl ocal users to perform a local root exploit via smb4k mounthelper if they can access and control the contents of a Samba shareThis issue affects smb4k: from ? before 4.0.5.",
"evidence": "osv:UBUNTU-CVE-2025-66003",
"products": [
{
"name": {
"value": "smb4k",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.1.2-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
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"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.0.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.0.2-1",
"evidence": "/affected/1/versions"
},
{
"value": "2.1.0-1",
"evidence": "/affected/1/versions"
}
]
},
{
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"evidence": "/affected/2/package/name"
},
"prerequisites": [],
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"affected_versions": [
{
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"evidence": "/affected/2/versions"
},
{
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"evidence": "/affected/2/versions"
},
{
"value": "3.0.4-0ubuntu1",
"evidence": "/affected/2/versions"
},
{
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"evidence": "/affected/2/versions"
}
]
},
{
"name": {
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"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.1.1-1",
"evidence": "/affected/3/versions"
},
{
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"evidence": "/affected/3/versions"
}
]
},
{
"name": {
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"evidence": "/affected/4/package/name"
},
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"affected_versions": [
{
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"evidence": "/affected/4/versions"
},
{
"value": "3.2.4-1",
"evidence": "/affected/4/versions"
},
{
"value": "3.2.5-1",
"evidence": "/affected/4/versions"
},
{
"value": "3.2.5-1build1",
"evidence": "/affected/4/versions"
},
{
"value": "3.2.5-1build2",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "smb4k",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.0.0-1",
"evidence": "/affected/5/versions"
},
{
"value": "4.0.4-1",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "smb4k",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.0.6-1",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "smb4k",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.0.4-1",
"evidence": "/affected/7/versions"
},
{
"value": "4.0.5-1",
"evidence": "/affected/7/versions"
},
{
"value": "4.0.5-1build1",
"evidence": "/affected/7/versions"
},
{
"value": "4.0.6-1",
"evidence": "/affected/7/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2025-66003",
"aliases": [
"UBUNTU-CVE-2025-66003"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "smb4k",
"purl": "pkg:deb/ubuntu/smb4k?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"1.1.2-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-66003.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "smb4k",
"binary_version": "1.1.2-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "smb4k",
"purl": "pkg:deb/ubuntu/smb4k?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"2.0.1-1",
"2.0.2-1",
"2.1.0-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-66003.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "smb4k",
"binary_version": "2.1.0-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "smb4k",
"purl": "pkg:deb/ubuntu/smb4k?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"3.0.2-1",
"3.0.3-1",
"3.0.4-0ubuntu1",
"3.0.4-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-66003.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "smb4k",
"binary_version": "3.0.4-1"
}
]
}
},
{
"ranges": [
{
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"events": [
{
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]
}
],
"package": {
"name": "smb4k",
"purl": "pkg:deb/ubuntu/smb4k?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"3.1.1-1",
"3.1.2-0ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-66003.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "smb4k",
"binary_version": "3.1.2-0ubuntu1"
}
]
}
},
{
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{
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}
]
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],
"package": {
"name": "smb4k",
"purl": "pkg:deb/ubuntu/smb4k?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"3.2.2-1",
"3.2.4-1",
"3.2.5-1",
"3.2.5-1build1",
"3.2.5-1build2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-66003.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "smb4k",
"binary_version": "3.2.5-1build2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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}
]
}
],
"package": {
"name": "smb4k",
"purl": "pkg:deb/ubuntu/smb4k?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"4.0.0-1",
"4.0.4-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-66003.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "smb4k",
"binary_version": "4.0.4-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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}
]
}
],
"package": {
"name": "smb4k",
"purl": "pkg:deb/ubuntu/smb4k?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"4.0.6-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-66003.json"
},
"ecosystem_specific": {
"binaries": [
{
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"binary_version": "4.0.6-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "smb4k",
"purl": "pkg:deb/ubuntu/smb4k?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"4.0.4-1",
"4.0.5-1",
"4.0.5-1build1",
"4.0.6-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-66003.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "smb4k",
"binary_version": "4.0.6-1"
}
]
}
}
],
"modified": "2026-10-17T12:57:29.356667844Z",
"provider": "osv",
"upstream": [
"CVE-2025-66003"
],
"references": [
"https://ubuntu.com/security/CVE-2025-66003",
"https://www.cve.org/CVERecord?id=CVE-2025-66003",
"https://www.openwall.com/lists/oss-security/2025/12/10/6"
]
},
"related_cves": [
{
"value": "CVE-2025-66003",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 357601,
"published_at": "2026-01-08T15:15:00+00:00"
}