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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2018-8356

20
FAUCET Score

CVE-2018-8356 is a security feature bypass vulnerability in Microsoft .NET Framework components, affecting numerous versions of .NET Framework, .NET Core, and ASP.NET Core. This medium-severity vulnerability (CVSS 5.5) allows a local, low-privileged attacker to bypass security features due to incorrect certificate validation, potentially leading to high integrity impact. There is no evidence of active exploitation, and no public exploit code is available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, with only one article from BleepingComputer mentioning it as part of a larger patch Tuesday.

Impacted Technologies

VendorProductVersion(s)CPE
3.0CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_framework:3.0:sp2:*:*:*:*:*:*
3.5CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*
3.5.1CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*
4.5.2CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_framework:4.5.2:*:*:*:*:*:*:*
4.6CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_framework:4.6:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.69%
Probability of exploitation in next 30 days
EPSS Percentile
49.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0069 is in the 95th percentile among its peer group of 15,932 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (164)

microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5 on Windows Server 2012
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5.1 on Windows 7 for 32-bit Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5.1 on Windows 7 for x64-based Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.5.2 on Windows 7 for x64-based Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.5.2 on Windows Server 2008 for 32-bit Systems Service Pack 2
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.5.2 on Windows Server 2008 for x64-based Systems Service Pack 2
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.5.2 on Windows 7 for 32-bit Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.5.2 on Windows 8.1 for 32-bit systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.5.2 on Windows 8.1 for x64-based systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.5.2 on Windows RT 8.1
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.5.2 on Windows Server 2012
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.5.2 on Windows Server 2012 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 8.1 for x64-based systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows RT 8.1
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 R2 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 8.1 for 32-bit systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 (Server Core installation)
View patch
microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: 11513-11497
View patch
microsoftpatch availablevia msrc
Product: 11513-11498
View patch
microsoftpatch availablevia msrc
Product: 11513-11499
View patch
microsoftpatch availablevia msrc
Product: 2472-11497
View patch
microsoftpatch availablevia msrc
Product: 2472-11498
View patch
microsoftpatch availablevia msrc
Product: 2472-11499
View patch
microsoftpatch availablevia msrc
Product: 11518-10729
View patch
microsoftpatch availablevia msrc
Product: 11518-10735
View patch
microsoftpatch availablevia msrc
Product: 2472-10729
View patch
microsoftpatch availablevia msrc
Product: 2472-10735
View patch
microsoftpatch availablevia msrc
Product: 10728-9312
View patch
microsoftpatch availablevia msrc
Product: 10728-9318
View patch
microsoftpatch availablevia msrc
Product: 11529-10047
View patch
microsoftpatch availablevia msrc
Product: 11529-10048
View patch
microsoftpatch availablevia msrc
Product: 11529-10051
View patch
microsoftpatch availablevia msrc
Product: 11529-10049
View patch
microsoftpatch availablevia msrc
Product: 9195-9311
View patch
microsoftpatch availablevia msrc
Product: 9195-9318
View patch
microsoftpatch availablevia msrc
Product: 9195-9312
View patch
microsoftpatch availablevia msrc
Product: 2472-10951
View patch
microsoftpatch availablevia msrc
Product: 2472-10952
View patch
microsoftpatch availablevia msrc
Product: 2472-11453
View patch
microsoftpatch availablevia msrc
Product: 2472-11454
View patch
microsoftpatch availablevia msrc
Product: 2472-11466
View patch
microsoftpatch availablevia msrc
Product: 2472-10852
View patch
microsoftpatch availablevia msrc
Product: 2472-10853
View patch
microsoftpatch availablevia msrc
Product: 2472-10816
View patch
microsoftpatch availablevia msrc
Product: 2472-10855
View patch
microsoftpatch availablevia msrc
Product: 11532-10852
View patch
microsoftpatch availablevia msrc
Product: 11532-10853
View patch
microsoftpatch availablevia msrc
Product: 11532-10816
View patch
microsoftpatch availablevia msrc
Product: 11532-10855
View patch
microsoftpatch availablevia msrc
Product: 2472-10481
View patch
microsoftpatch availablevia msrc
Product: 2472-10482
View patch
microsoftpatch availablevia msrc
Product: 2472-10483
View patch
microsoftpatch availablevia msrc
Product: 2472-10543
View patch
microsoftpatch availablevia msrc
Product: 2472-10379
View patch
microsoftpatch availablevia msrc
Product: 2472-10378
View patch
microsoftpatch availablevia msrc
Product: 9495-10047
View patch
microsoftpatch availablevia msrc
Product: 9495-10048
View patch
microsoftpatch availablevia msrc
Product: 9495-10050
View patch
microsoftpatch availablevia msrc
Product: 9495-10051
View patch
microsoftpatch availablevia msrc
Product: 9495-10049
View patch
microsoftpatch availablevia msrc
Product: 10636-10047
View patch
microsoftpatch availablevia msrc
Product: 10636-10048
View patch
microsoftpatch availablevia msrc
Product: 10636-9312
View patch
microsoftpatch availablevia msrc
Product: 10636-9318
View patch
microsoftpatch availablevia msrc
Product: 10636-10051
View patch
microsoftpatch availablevia msrc
Product: 10636-10049
View patch
microsoftpatch availablevia msrc
Product: 10636-10481
View patch
microsoftpatch availablevia msrc
Product: 10636-10482
View patch
microsoftpatch availablevia msrc
Product: 10636-10484
View patch
microsoftpatch availablevia msrc
Product: 10636-10483
View patch
microsoftpatch availablevia msrc
Product: 10636-10543
View patch
microsoftpatch availablevia msrc
Product: 10636-10378
View patch
microsoftpatch availablevia msrc
Product: 10636-10379
View patch
microsoftpatch availablevia msrc
Product: 11529-10484
View patch
microsoftpatch availablevia msrc
Product: 11529-10483
View patch
microsoftpatch availablevia msrc
Product: 11529-10543
View patch
microsoftpatch availablevia msrc
Product: 11529-10481
View patch
microsoftpatch availablevia msrc
Product: 11529-10482
View patch
microsoftpatch availablevia msrc
Product: 11529-10378
View patch
microsoftpatch availablevia msrc
Product: 11529-10379
View patch
microsoftpatch availablevia msrc
Product: .NET Core 1.0
View patch
microsoftpatch availablevia msrc
Product: .NET Core 1.1
View patch
microsoftpatch availablevia msrc
Product: .NET Core 2.0
View patch
microsoftpatch availablevia msrc
Product: ASP.NET Core 2.0
View patch
microsoftpatch availablevia msrc
Product: ASP.NET Core 1.1
View patch
microsoftpatch availablevia msrc
Product: ASP.NET Core 1.0
View patch
microsoftpatch availablevia msrc
Product: PowerShell Core 6.0
View patch
microsoftpatch availablevia msrc
Product: PowerShell Core 6.1
View patch
microsoftpatch availablevia msrc
Product: .NET Framework 4.7.2 Developer Pack
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5 on Windows Server, version 1803 (Server Core Installation)
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.7.2 on Windows 10 Version 1803 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.7.2 on Windows 10 Version 1803 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.7.2 on Windows Server, version 1803 (Server Core Installation)
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1803 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2 on Windows 10 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2 on Windows 10 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5 on Windows 10 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5 on Windows 10 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6 on Windows Server 2008 for 32-bit Systems Service Pack 2
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6 on Windows Server 2008 for x64-based Systems Service Pack 2
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 7 for 32-bit Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows 7 for x64-based Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1703 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1703 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1709 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1709 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5 on Windows Server, version 1709 (Server Core Installation)
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5 on Windows Server 2016
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5 on Windows Server 2016 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5 on Windows 8.1 for 32-bit systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5 on Windows 8.1 for x64-based systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5 on Windows Server 2012 R2
View patch
nugetpatch availablevia ghsa
Product: System.Private.ServiceModelFixed in: 4.1.3
nugetpatch availablevia ghsa
Product: System.Private.ServiceModelFixed in: 4.4.4
nugetpatch availablevia ghsa
Product: System.Private.ServiceModelFixed in: 4.5.3
nugetpatch availablevia ghsa
Product: System.ServiceModel.DuplexFixed in: 4.3.3
nugetpatch availablevia ghsa
Product: System.ServiceModel.DuplexFixed in: 4.4.4
nugetpatch availablevia ghsa
Product: System.ServiceModel.DuplexFixed in: 4.5.3
nugetpatch availablevia ghsa
Product: System.ServiceModel.HttpFixed in: 4.3.3
nugetpatch availablevia ghsa
Product: System.ServiceModel.HttpFixed in: 4.4.4
nugetpatch availablevia ghsa
Product: System.ServiceModel.HttpFixed in: 4.5.3
nugetpatch availablevia ghsa
Product: System.ServiceModel.HttpFixed in: 4.1.3
nugetpatch availablevia ghsa
Product: System.ServiceModel.NetTcpFixed in: 4.3.3
nugetpatch availablevia ghsa
Product: System.ServiceModel.NetTcpFixed in: 4.4.4
nugetpatch availablevia ghsa
Product: System.ServiceModel.NetTcpFixed in: 4.5.3
nugetpatch availablevia ghsa
Product: System.ServiceModel.NetTcpFixed in: 4.1.3
nugetpatch availablevia ghsa
Product: System.ServiceModel.PrimitivesFixed in: 4.3.3
nugetpatch availablevia ghsa
Product: System.ServiceModel.PrimitivesFixed in: 4.4.4
nugetpatch availablevia ghsa
Product: System.ServiceModel.PrimitivesFixed in: 4.5.3
nugetpatch availablevia ghsa
Product: System.ServiceModel.PrimitivesFixed in: 4.1.3
nugetpatch availablevia ghsa
Product: System.ServiceModel.SecurityFixed in: 4.3.3
nugetpatch availablevia ghsa
Product: System.ServiceModel.SecurityFixed in: 4.4.4
nugetpatch availablevia ghsa
Product: System.ServiceModel.SecurityFixed in: 4.5.3
nugetpatch availablevia ghsa
Product: System.ServiceModel.DuplexFixed in: 4.0.4
nugetpatch availablevia ghsa
Product: System.ServiceModel.SecurityFixed in: 4.0.4
nugetpatch availablevia ghsa
Product: System.Private.ServiceModelFixed in: 4.3.3
redhatend of lifevia redhat_api
Product: .NET Core 1.1 on Red Hat Enterprise LinuxFixed in: rh-dotnetcore11-dotnetcore
redhatend of lifevia redhat_api
Product: .NET Core 2.0 on Red Hat Enterprise LinuxFixed in: rh-dotnet20-dotnet
redhatend of lifevia redhat_api
Product: .NET Core 2.1 on Red Hat Enterprise LinuxFixed in: rh-dotnet21-dotnet
redhatend of lifevia redhat_api
Product: .NET Core 1.0 on Red Hat Enterprise LinuxFixed in: rh-dotnetcore10-dotnetcore

Vendor Advisories (3)

nugetGHSA-p9wx-v264-q34pmedium

Improper Certificate Validation in Microsoft .NET Framework components

May 14, 2022
microsoft2018-Jul/CVE-2018-8356Important

.NET Framework Security Feature Bypass Vulnerability

Jul 10, 2018
redhatCVE-2018-8356Moderate

Core: incorrect certificates validation

Jul 10, 2018

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2018-8356
PatchVendor Advisory
securityfocus.com / bid/104664
Third Party AdvisoryVDB Entry
securitytracker.com / id/1041257
Third Party AdvisoryVDB Entry