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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2017-0248

21
FAUCET Score

CVE-2017-0248 is a security feature bypass vulnerability affecting multiple versions of Microsoft .NET Framework (2.0 through 4.7). An attacker can exploit this flaw to bypass Enhanced Security Usage taggings by presenting a certificate invalid for its intended use. This vulnerability has a CVSS score of 7.5 (High), indicating it can be exploited remotely with low attack complexity, leading to a high impact on integrity without requiring user interaction or privileges. While there is no evidence of active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), it received limited community discussion and media coverage at the time of its disclosure.

Impacted Technologies

VendorProductVersion(s)CPE
2.0CPE matchmatch criteria
cpe:2.3:a:microsoft:.net_framework:2.0: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

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
5.51%
Probability of exploitation in next 30 days
EPSS Percentile
92.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0551 is in the 86th percentile among its peer group of 51,551 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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 (179)

microsoftpatch availablevia msrc
Product: 10957-10952
View patch
microsoftpatch availablevia msrc
Product: 2472-10852
View patch
microsoftpatch availablevia msrc
Product: 2472-10853
View patch
microsoftpatch availablevia msrc
Product: 2472-10951
View patch
microsoftpatch availablevia msrc
Product: 2472-10952
View patch
microsoftpatch availablevia msrc
Product: 2472-10816
View patch
microsoftpatch availablevia msrc
Product: 2472-10855
View patch
microsoftpatch availablevia msrc
Product: 10636-9312
View patch
microsoftpatch availablevia msrc
Product: 10636-9318
View patch
microsoftpatch availablevia msrc
Product: 10636-10047
View patch
microsoftpatch availablevia msrc
Product: 10636-10048
View patch
microsoftpatch availablevia msrc
Product: 10636-10051
View patch
microsoftpatch availablevia msrc
Product: 10636-10378
View patch
microsoftpatch availablevia msrc
Product: 10636-10379
View patch
microsoftpatch availablevia msrc
Product: 10636-10481
View patch
microsoftpatch availablevia msrc
Product: 10636-10482
View patch
microsoftpatch availablevia msrc
Product: 10636-10484
microsoftpatch availablevia msrc
Product: 10636-10483
View patch
microsoftpatch availablevia msrc
Product: 10636-10543
View patch
microsoftpatch availablevia msrc
Product: 10728-9312
View patch
microsoftpatch availablevia msrc
Product: 10728-9318
View patch
microsoftpatch availablevia msrc
Product: 10728-10729
View patch
microsoftpatch availablevia msrc
Product: 10728-10735
View patch
microsoftpatch availablevia msrc
Product: 10808-10789
View patch
microsoftpatch availablevia msrc
Product: 10808-10788
View patch
microsoftpatch availablevia msrc
Product: 10900-10484
microsoftpatch availablevia msrc
Product: 10807-10047
View patch
microsoftpatch availablevia msrc
Product: 10807-10048
View patch
microsoftpatch availablevia msrc
Product: 10807-10051
View patch
microsoftpatch availablevia msrc
Product: 10807-10049
View patch
microsoftpatch availablevia msrc
Product: 10807-10378
View patch
microsoftpatch availablevia msrc
Product: 10807-10379
View patch
microsoftpatch availablevia msrc
Product: 10807-10483
View patch
microsoftpatch availablevia msrc
Product: 10807-10543
View patch
microsoftpatch availablevia msrc
Product: 10807-10481
View patch
microsoftpatch availablevia msrc
Product: 10807-10482
View patch
microsoftpatch availablevia msrc
Product: 10807-10484
microsoftpatch availablevia msrc
Product: 10957-10951
View patch
microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 2.0 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 Server 2012 (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 3.5.1 on Windows 7 for 32-bit Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5.1 on Windows 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 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 (Server Core installation)
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 4.6.2 on Windows Server 2012 R2
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6.2 on Windows Server 2012 R2 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6.2 on Windows Server 2012
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6.2 on Windows Server 2012 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6.2 on Windows 8.1 for x64-based systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6.2 on Windows 7 for 32-bit Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6.2 on Windows 7 for x64-based Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6.2 on Windows 8.1 for 32-bit systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6.2 on Windows 10 Version 1607 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6.2 on Windows 10 Version 1607 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6.2 on Windows Server 2016
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6.2 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
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 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 3.5 on Windows 10 Version 1511 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 3.5 on Windows 10 Version 1511 for x64-based Systems
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 10 Version 1607 for x64-based Systems
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 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 4.5.2 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 7 for 32-bit Systems Service Pack 1
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 R2 for x64-based Systems Service Pack 1
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 4.5.2 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
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 4.6 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 on Windows 10 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6 on Windows 10 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6.1 on Windows 10 Version 1511 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6.1 on Windows 10 Version 1511 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6.2 on Windows RT 8.1
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1 on Windows 7 for 32-bit Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1 on Windows 7 for x64-based Systems Service Pack 1
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1 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 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1 on Windows Server 2012
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1 on Windows Server 2012 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1 on Windows Server 2012 R2
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1 on Windows Server 2012 R2 (Server Core installation)
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1 on Windows 8.1 for 32-bit systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1 on Windows 8.1 for x64-based systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.6/4.6.1 on Windows RT 8.1
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.7 on Windows 10 Version 1703 for 32-bit Systems
View patch
microsoftpatch availablevia msrc
Product: Microsoft .NET Framework 4.7 on Windows 10 Version 1703 for x64-based Systems
View patch
microsoftpatch availablevia msrc
Product: 9292-9311
View patch
microsoftpatch availablevia msrc
Product: 9292-9312
View patch
microsoftpatch availablevia msrc
Product: 9292-9318
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: 9495-10051
View patch
microsoftpatch availablevia msrc
Product: 9495-10050
View patch
microsoftpatch availablevia msrc
Product: 9495-10049
View patch
microsoftpatch availablevia msrc
Product: 9495-10048
View patch
microsoftpatch availablevia msrc
Product: 10900-10483
View patch
microsoftpatch availablevia msrc
Product: 10900-10543
View patch
microsoftpatch availablevia msrc
Product: 10900-10378
View patch
microsoftpatch availablevia msrc
Product: 10900-10379
View patch
microsoftpatch availablevia msrc
Product: 10900-10482
View patch
microsoftpatch availablevia msrc
Product: 10900-10047
View patch
microsoftpatch availablevia msrc
Product: 10900-10051
View patch
microsoftpatch availablevia msrc
Product: 10900-10049
View patch
microsoftpatch availablevia msrc
Product: 10900-10048
View patch
microsoftpatch availablevia msrc
Product: 10900-10481
View patch
microsoftpatch availablevia msrc
Product: 10900-10852
View patch
microsoftpatch availablevia msrc
Product: 10900-10853
View patch
microsoftpatch availablevia msrc
Product: 10900-10816
View patch
microsoftpatch availablevia msrc
Product: 10900-10855
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: 2472-10729
View patch
microsoftpatch availablevia msrc
Product: 2472-10735
View patch
microsoftpatch availablevia msrc
Product: 2472-10789
View patch
microsoftpatch availablevia msrc
Product: 2472-10788
View patch
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.MvcFixed in: 1.0.4
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.MvcFixed in: 1.1.3
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.CoreFixed in: 1.0.4
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.CoreFixed in: 1.1.3
nugetpatch availablevia ghsa
Product: System.Net.HttpFixed in: 4.1.2
nugetpatch availablevia ghsa
Product: System.Net.HttpFixed in: 4.3.2
nugetpatch availablevia ghsa
Product: System.Text.Encodings.WebFixed in: 4.0.1
nugetpatch availablevia ghsa
Product: System.Text.Encodings.WebFixed in: 4.3.1
nugetpatch availablevia ghsa
Product: System.Net.Http.WinHttpHandlerFixed in: 4.0.1
nugetpatch availablevia ghsa
Product: System.Net.Http.WinHttpHandlerFixed in: 4.3.1
nugetpatch availablevia ghsa
Product: System.Net.SecurityFixed in: 4.0.1
nugetpatch availablevia ghsa
Product: System.Net.SecurityFixed in: 4.3.1
nugetpatch availablevia ghsa
Product: System.Net.WebSockets.ClientFixed in: 4.0.1
nugetpatch availablevia ghsa
Product: System.Net.WebSockets.ClientFixed in: 4.3.1
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.AbstractionsFixed in: 1.0.4
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.AbstractionsFixed in: 1.1.3
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.ApiExplorerFixed in: 1.0.4
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.ApiExplorerFixed in: 1.1.3
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.CorsFixed in: 1.0.4
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.CorsFixed in: 1.1.3
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.DataAnnotationsFixed in: 1.0.4
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.DataAnnotationsFixed in: 1.1.3
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.Formatters.JsonFixed in: 1.0.4
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.Formatters.JsonFixed in: 1.1.3
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.Formatters.XmlFixed in: 1.0.4
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.Formatters.XmlFixed in: 1.1.3
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.LocalizationFixed in: 1.0.4
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.LocalizationFixed in: 1.1.3
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.Razor.HostFixed in: 1.0.4
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.Razor.HostFixed in: 1.1.3
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.RazorFixed in: 1.0.4
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.RazorFixed in: 1.1.3
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.TagHelpersFixed in: 1.0.4
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.TagHelpersFixed in: 1.1.3
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.ViewFeaturesFixed in: 1.0.4
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.ViewFeaturesFixed in: 1.1.3
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.WebApiCompatShimFixed in: 1.0.4
nugetpatch availablevia ghsa
Product: Microsoft.AspNetCore.Mvc.WebApiCompatShimFixed in: 1.1.3

Vendor Advisories (2)

nugetGHSA-ch6p-4jcm-h8vhmedium

Moderate severity vulnerability that affects Microsoft.AspNetCore.Mvc and Microsoft.AspNetCore.Mvc.Core

Oct 16, 2018
microsoft2017-May/CVE-2017-0248Important

.NET Security Feature Bypass Vulnerability

May 9, 2017

References

portal.msrc.microsoft.com / en-US/security-guidance/advisory/CVE-2017-0248
PatchVendor Advisory
securityfocus.com / bid/98117
Third Party AdvisoryVDB Entry
securitytracker.com / id/1038458