High
Security advisory
In Wireshark through 2.6.2, the create_app_running_mutex function in wsutil/file_util.c calls SetSecurityDescriptorDacl to set a NULL DACL, which allows attackers to modify the access control arbitrarily.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-14438
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 05:11 UTC · Revision 1
Source evidence
In Wireshark through 2.6.2, the create_app_running_mutex function in wsutil/file_util.c calls SetSecurityDescriptorDacl to set a NULL DACL, which allows attackers to modify the access control arbitrarily.
osv:CVE-2018-14438
Complete source record
{
"id": "dfcc102204706686cf8b0ce4ec7b81b01fe1909e866ea1dbcce2efcf837ff481",
"url": "https://osv.dev/vulnerability/CVE-2018-14438",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-14438",
"summary": "In Wireshark through 2.6.2, the create_app_running_mutex function in wsutil/file_util.c calls SetSecurityDescriptorDacl to set a NULL DACL, which allows attackers to modify the access control arbitrarily.",
"evidence": "osv:CVE-2018-14438",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2018-14438",
"aliases": [
"CVE-2018-14438"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/wireshark/wireshark",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "1b3cedbc5fe5b9d8b454a10fcd2046f0d38a9f19"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "2.6.2"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
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"v2.6.2",
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"wireshark-2.5.0",
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"v2.5.0rc0",
"v2.3.0rc0",
"v2.1.2rc0",
"wireshark-2.1.1",
"v2.1.1",
"v2.1.1rc0",
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"wireshark-1.99.6",
"v1.99.6",
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"wireshark-1.99.5",
"v1.99.5",
"v1.99.5rc0",
"wireshark-1.99.4",
"v1.99.4",
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"wireshark-1.99.3",
"v1.99.3",
"v1.99.3rc0",
"wireshark-1.99.2",
"v1.99.2",
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"v1.99.1",
"v1.99.1rc0",
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"v1.99.0-rc1",
"v1.11.4-rc1",
"wireshark-1.11.3",
"v1.11.3",
"v1.11.3-rc1",
"v1.11.2",
"v1.11.2-rc1",
"v1.11.1",
"v1.11.1-rc1",
"v1.11.0",
"v1.11.0-rc1",
"start",
"ethereal-0.3.15",
"ethereal-0-3-15",
"backups/ethereal@18706"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-14438.json"
}
},
{
"ranges": [
{
"repo": "https://gitlab.com/wireshark/wireshark",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "1b3cedbc5fe5b9d8b454a10fcd2046f0d38a9f19"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "2.6.2"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"wireshark-2.6.2",
"v2.6.2",
"v2.6.2rc0",
"wireshark-2.6.1",
"v2.6.1",
"v2.6.1rc0",
"wireshark-2.6.0",
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"v2.6.0rc0",
"v2.5.2rc0",
"v2.5.1",
"v2.5.1rc0",
"wireshark-2.5.0",
"v2.5.0",
"v2.5.0rc0",
"v2.3.0rc0",
"v2.1.2rc0",
"wireshark-2.1.1",
"v2.1.1",
"v2.1.1rc0",
"wireshark-2.1.0",
"v2.1.0",
"v2.1.0rc0",
"v1.99.10rc0",
"wireshark-1.99.9",
"v1.99.9",
"v1.99.9rc0",
"wireshark-1.99.8",
"v1.99.8",
"v1.99.8rc0",
"wireshark-1.99.7",
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"wireshark-1.99.6",
"v1.99.6",
"v1.99.6rc0",
"wireshark-1.99.5",
"v1.99.5",
"v1.99.5rc0",
"wireshark-1.99.4",
"v1.99.4",
"v1.99.4rc0",
"wireshark-1.99.3",
"v1.99.3",
"v1.99.3rc0",
"wireshark-1.99.2",
"v1.99.2",
"v1.99.2rc0",
"wireshark-1.99.1",
"v1.99.1",
"v1.99.1rc0",
"wireshark-1.99.0",
"v1.99.0",
"v1.99.0-rc1",
"v1.11.4-rc1",
"wireshark-1.11.3",
"v1.11.3",
"v1.11.3-rc1",
"v1.11.2",
"v1.11.2-rc1",
"v1.11.1",
"v1.11.1-rc1",
"v1.11.0",
"v1.11.0-rc1",
"start",
"ethereal-0.3.15",
"ethereal-0-3-15",
"backups/ethereal@18706"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-14438.json"
}
}
],
"modified": "2026-10-24T10:30:25.514438614Z",
"provider": "osv",
"references": [
"https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=14921"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2018-14438",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 431372,
"published_at": "2018-07-20T00:29:00.457+00:00"
}