Medium
Security advisory
All versions of Samba prior to 4.15.5 are vulnerable to a malicious client using a server symlink to determine if a file or directory exists in an area of the server file system not exported under the share definition. SMB1 with unix extensions has to be enabled in order for this attack to succeed.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2021-44141
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 05:36 UTC · Revision 1
Source evidence
All versions of Samba prior to 4.15.5 are vulnerable to a malicious client using a server symlink to determine if a file or directory exists in an area of the server file system not exported under the share definition. SMB1 with unix extensions has to be enabled in order for this attack to succeed.
osv:CVE-2021-44141
Complete source record
{
"id": "1ff80454c43940b230f67d7788cb531d283949204a9b902a0a0199d1f9c91ce4",
"url": "https://osv.dev/vulnerability/CVE-2021-44141",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2021-44141",
"summary": "All versions of Samba prior to 4.15.5 are vulnerable to a malicious client using a server symlink to determine if a file or directory exists in an area of the server file system not exported under the share definition. SMB1 with unix extensions has to be enabled in order for this attack to succeed.",
"evidence": "osv:CVE-2021-44141",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2021-44141",
"aliases": [
"CVE-2021-44141"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/samba-team/samba",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "27bd8a323591486e76e916a6084c7300bf358eec"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "4.15.5"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"samba-4.15.4",
"samba-4.15.3",
"samba-4.15.2",
"samba-4.15.1",
"ldb-2.4.1",
"samba-4.15.0",
"samba-4.15.0rc7",
"samba-4.15.0rc6",
"samba-4.15.0rc5",
"samba-4.15.0rc4",
"samba-4.15.0rc3",
"samba-4.15.0rc2",
"samba-4.15.0rc1",
"ldb-2.4.0",
"tdb-1.4.4",
"talloc-2.3.3",
"tevent-0.11.0",
"samba-4.14.0rc1",
"talloc-2.3.2",
"samba-4.13.0rc1",
"ldb-2.2.0",
"ldb-2.1.1",
"samba-4.12.0rc1",
"ldb-2.1.0",
"tevent-0.10.2",
"tdb-1.4.3",
"talloc-2.3.1",
"tevent-0.10.1",
"tdb-1.4.2",
"talloc-2.3.0",
"samba-4.11.0rc1",
"ldb-2.0.5",
"tdb-1.4.1",
"ldb-1.6.3",
"tevent-0.10.0",
"talloc-2.2.0",
"tdb-1.4.0",
"ldb-1.6.2",
"tevent-0.9.39",
"talloc-2.1.16",
"tdb-1.3.18",
"ldb-1.6.1",
"samba-4.10.0rc1",
"ldb-1.5.2",
"tevent-0.9.38",
"talloc-2.1.15",
"tdb-1.3.17",
"ldb-1.5.1",
"ldb-1.5.0",
"samba-4.9.0rc1",
"ldb-1.4.1",
"talloc-2.1.14",
"tdb-1.3.16",
"tevent-0.9.37",
"ldb-1.4.0",
"talloc-2.1.13",
"talloc-2.1.12",
"ldb-1.3.2",
"tevent-0.9.36",
"samba-4.8.0rc1",
"ldb-1.3.1",
"tevent-0.9.35",
"talloc-2.1.11",
"tevent-0.9.34",
"ldb-1.3.0",
"ldb-1.2.2",
"tdb-1.3.15",
"ldb-1.2.1",
"tevent-0.9.33",
"talloc-2.1.10",
"samba-4.7.0rc1",
"ldb-1.2.0",
"tdb-1.3.14",
"tevent-0.9.32",
"ldb-1.1.31",
"ldb-1.1.30",
"tdb-1.3.13",
"talloc-2.1.9",
"samba-4.6.0rc1",
"ldb-1.1.29",
"tdb-1.3.12",
"ldb-1.1.28",
"tevent-0.9.31",
"tdb-1.3.11",
"tevent-0.9.30",
"samba-4.5.0rc1",
"ldb-1.1.27",
"tevent-0.9.29",
"talloc-2.1.8",
"tdb-1.3.10",
"talloc-2.1.7",
"tdb-1.3.9",
"talloc-2.1.6",
"tevent-0.9.28",
"ldb-1.1.26",
"tevent-0.9.27",
"samba-4.4.0rc1",
"ldb-1.1.25",
"ldb-1.1.23",
"talloc-2.1.5",
"tdb-1.3.8",
"tevent-0.9.26",
"ldb-1.1.22",
"talloc-2.1.4",
"samba-4.3.0rc1",
"ldb-1.1.21",
"tdb-1.3.7",
"talloc-2.1.3",
"tdb-1.3.6",
"tevent-0.9.25",
"tdb-1.3.5",
"talloc-2.1.2",
"tevent-0.9.24",
"tevent-0.9.23",
"ldb-1.1.20",
"ldb-1.1.19",
"tdb-1.3.4",
"tdb-1.3.3",
"ldb-1.1.18",
"tdb-1.3.2",
"samba-4.2.0rc1",
"tevent-0.9.22",
"tdb-1.3.1",
"tdb-1.3.0",
"talloc-2.1.1",
"ldb-1.1.17",
"tdb-1.2.13",
"tevent-0.9.21",
"tevent-0.9.20",
"talloc-2.1.0",
"tevent-0.9.19",
"ldb-1.1.16",
"tdb-1.2.12",
"tevent-0.9.18",
"ldb-1.1.15",
"ldb-1.1.14",
"tdb-1.2.11",
"talloc-2.0.8",
"samba-4.0.0rc1",
"ldb-1.1.13",
"samba-4.0.0beta8",
"ldb-1.1.12",
"ldb-1.1.11",
"samba-4.0.0beta7",
"tevent-0.9.17",
"samba-4.0.0beta6",
"ldb-1.1.10",
"ldb-1.1.9",
"samba-4.0.0beta5",
"samba-4.0.0beta4",
"ldb-1.1.8",
"samba-4.0.0beta3",
"samba-4.0.0beta2",
"tevent-0.9.16",
"samba-4.0.0beta1",
"samba-4.0.0alpha21",
"samba-4.0.0alpha20",
"ldb-1.1.6",
"samba-4.0.0alpha19",
"ldb-1.1.5",
"tdb-1.2.10",
"samba-4.0.0alpha18",
"tevent-0.9.15",
"ldb-1.1.4",
"ldb-1.1.3",
"talloc-2.0.7",
"samba-4.0.0alpha17",
"tevent-0.9.14",
"ldb-1.1.2",
"tevent-0.9.13",
"tevent-0.9.12",
"ldb-1.1.0",
"tevent-0.9.11",
"tdb-1.2.1",
"samba-4.0.0alpha10",
"samba-4.0.0alpha9",
"tdb-1.2.0",
"tevent-0.9.8",
"talloc-2.0.0",
"samba-4.0.0alpha8",
"talloc-1.3.1",
"tdb-1.1.5",
"samba-4.0.0alpha7",
"samba-4.0.0alpha6"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-44141.json"
}
}
],
"modified": "2026-10-24T10:30:31.090776558Z",
"provider": "osv",
"references": [
"https://security.gentoo.org/glsa/202309-06",
"https://www.samba.org/samba/security/CVE-2021-44141.html"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
"cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:fedora",
"extracted_events": [
{
"range": [
{
"introduced": "34"
},
{
"last_affected": "34"
},
{
"introduced": "35"
},
{
"last_affected": "35"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:redhat:storage:3.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:storage",
"extracted_events": [
{
"range": [
{
"introduced": "3.0"
},
{
"last_affected": "3.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2021-44141",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 432724,
"published_at": "2022-02-21T18:15:08.493+00:00"
}