Medium
Security advisory
A security feature bypass vulnerability exists when Microsoft .NET Framework components do not correctly validate certificates, aka ".NET Framework Security Feature Bypass Vulnerability." This affects .NET Framework 4.7.2, Microsoft .NET Framework 3.0, Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2, ASP.NET Core 1.1, Microsoft .NET Framework 4.5.2, ASP.NET Core 2.0, ASP.NET Core 1.0, .NET Core 1.1, Microsoft .NET Framework 3.5, Microsoft .NET Framework 3.5.1, Microsoft .NET Framework 4.6/4.6.1/4.6.2, .NET Core 1.0, .NET Core 2.0, Microsoft .NET Framework 4.6, Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2, Microsoft .NET Framework 4.7.2.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-8356
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 08:00 UTC · Revision 1
Source evidence
A security feature bypass vulnerability exists when Microsoft .NET Framework components do not correctly validate certificates, aka ".NET Framework Security Feature Bypass Vulnerability." This affects .NET Framework 4.7.2, Microsoft .NET Framework 3.0, Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2, ASP.NET Core 1.1, Microsoft .NET Framework 4.5.2, ASP.NET Core 2.0, ASP.NET Core 1.0, .NET Core 1.1, Microsoft .NET Framework 3.5, Microsoft .NET Framework 3.5.1, Microsoft .NET Framework 4.6/4.6.1/4.6.2, .NET Core 1.0, .NET Core 2.0, Microsoft .NET Framework 4.6, Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2, Microsoft .NET Framework 4.7.2.
osv:CVE-2018-8356
Complete source record
{
"id": "6ea674462a8277dde2f8eaddcbbeb289047f336570e11421785959408089f639",
"url": "https://osv.dev/vulnerability/CVE-2018-8356",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-8356",
"summary": "A security feature bypass vulnerability exists when Microsoft .NET Framework components do not correctly validate certificates, aka \".NET Framework Security Feature Bypass Vulnerability.\" This affects .NET Framework 4.7.2, Microsoft .NET Framework 3.0, Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2, ASP.NET Core 1.1, Microsoft .NET Framework 4.5.2, ASP.NET Core 2.0, ASP.NET Core 1.0, .NET Core 1.1, Microsoft .NET Framework 3.5, Microsoft .NET Framework 3.5.1, Microsoft .NET Framework 4.6/4.6.1/4.6.2, .NET Core 1.0, .NET Core 2.0, Microsoft .NET Framework 4.6, Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2, Microsoft .NET Framework 4.7.2.",
"evidence": "osv:CVE-2018-8356",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2018-8356",
"aliases": [
"CVE-2018-8356",
"GHSA-p9wx-v264-q34p"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/dotnet/aspnetcore",
"type": "GIT",
"events": [
{
"introduced": "93ef04d69d1f1a189e9c342f656e85af50a14bb6"
},
{
"last_affected": "999787ace6778fae7ddb77178052231d7351f706"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:microsoft:asp.net_core:1.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0"
},
{
"last_affected": "1.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:microsoft:asp.net_core:1.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.1"
},
{
"last_affected": "1.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:microsoft:asp.net_core:2.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2.0"
},
{
"last_affected": "2.0"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"1.0",
"1.1",
"2.0",
"2.0.0",
"2.0.0-preview2",
"2.0.0-preview1",
"1.1.3",
"1.1.2",
"1.0.5",
"1.1.1",
"1.0.4",
"1.0.3",
"1.1.0",
"1.1.0-preview1",
"1.0.0",
"1.0.1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-8356.json"
}
},
{
"ranges": [
{
"repo": "https://github.com/dotnet/core",
"type": "GIT",
"events": [
{
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},
{
"last_affected": "f3c64ec2d713c053b20bcf90e962cd7fb161370c"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:microsoft:.net_core:1.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0"
},
{
"last_affected": "1.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:microsoft:.net_core:1.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.1"
},
{
"last_affected": "1.1"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:microsoft:.net_core:2.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2.0"
},
{
"last_affected": "2.0"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"1.0",
"1.1",
"2.0",
"v2.0.0",
"v2.0.0-preview2",
"v2.0.0-preview1",
"v1.1.2",
"v1.0.5",
"v1.1.1",
"v1.0.4",
"v1.0.3",
"v1.1",
"v1.1.0-preview1",
"v1.0.2",
"v1.0.1",
"v1.1.0",
"v1.0.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-8356.json"
}
},
{
"ranges": [
{
"repo": "https://github.com/powershell/powershell",
"type": "GIT",
"events": [
{
"introduced": "2f818615bed15141c062dd185f659ed110d9c6ba"
},
{
"last_affected": "855d2b9d75bd5b92e1929676d3ec6e13ef3e6838"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:microsoft:powershell_core:6.0:*:*:*:*:*:*:*",
"range": [
{
"introduced": "6.0"
},
{
"last_affected": "6.0"
}
],
"source": "CPE_STRING"
},
{
"cpe": "cpe:2.3:a:microsoft:powershell_core:6.1:*:*:*:*:*:*:*",
"range": [
{
"introduced": "6.1"
},
{
"last_affected": "6.1"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"6.0",
"6.1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-8356.json"
}
}
],
"modified": "2026-10-24T10:31:01.658814968Z",
"provider": "osv",
"references": [
"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8356"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:microsoft:.net_framework:3.0:sp2:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:4.5.2:*:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:4.6.1:*:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:4.6:*:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*",
"cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*"
],
"vendor_product": "microsoft:.net_framework",
"extracted_events": [
{
"range": [
{
"introduced": "3.0-sp2"
},
{
"last_affected": "3.0-sp2"
},
{
"introduced": "3.5"
},
{
"last_affected": "3.5"
},
{
"introduced": "3.5.1"
},
{
"last_affected": "3.5.1"
},
{
"introduced": "4.5.2"
},
{
"last_affected": "4.5.2"
},
{
"introduced": "4.6"
},
{
"last_affected": "4.6"
},
{
"introduced": "4.6.2"
},
{
"last_affected": "4.6.2"
},
{
"introduced": "4.7"
},
{
"last_affected": "4.7"
},
{
"introduced": "4.7.1"
},
{
"last_affected": "4.7.1"
},
{
"introduced": "4.7.2"
},
{
"last_affected": "4.7.2"
},
{
"introduced": "4.6"
},
{
"last_affected": "4.6"
},
{
"introduced": "4.6.1"
},
{
"last_affected": "4.6.1"
},
{
"introduced": "4.6.2"
},
{
"last_affected": "4.6.2"
},
{
"introduced": "4.6"
},
{
"last_affected": "4.6"
},
{
"introduced": "4.6.1"
},
{
"last_affected": "4.6.1"
},
{
"introduced": "4.6.2"
},
{
"last_affected": "4.6.2"
},
{
"introduced": "4.7"
},
{
"last_affected": "4.7"
},
{
"introduced": "4.7.1"
},
{
"last_affected": "4.7.1"
},
{
"introduced": "4.7.2"
},
{
"last_affected": "4.7.2"
},
{
"introduced": "4.7.2"
},
{
"last_affected": "4.7.2"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:microsoft:.net_framework_developer_pack:4.7.2:*:*:*:*:*:*:*"
],
"vendor_product": "microsoft:.net_framework_developer_pack",
"extracted_events": [
{
"range": [
{
"introduced": "4.7.2"
},
{
"last_affected": "4.7.2"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2018-8356",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 439836,
"published_at": "2018-07-11T00:29:02.587+00:00"
}