CVE-2017-0248
.NET Security Feature Bypass Vulnerability
CVE-2017-0248 is fixed in 70 products on 1 platform, first by KB4019473, released May 9, 2017. It is not reported as exploited. Patch Radar priority: High.
High
CVSS
n/a
Important
Exploitation
None reported
Exploitation Unlikely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0551
92nd percentile
<p>A security feature bypass vulnerability exists when Microsoft .NET Framework (and .NET Core) components do not completely validate certificates.</p> <p>An attacker could present a certificate that is marked invalid for a specific use, but the component uses it for that purpose. This action disregards the Enhanced Key Usage taggings.</p> <p>The security update addresses the vulnerability by helping to ensure that .NET Framework (and .NET Core) components completely validate certificates.</p>
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Microsoft | |||
| Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | KB4019115 | May 9, 2017 | |
| Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | KB4019109 | May 9, 2017 | |
| Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2 | KB4019115 | May 9, 2017 | |
| Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2 | KB4019109 | May 9, 2017 | |
| Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 | KB4019115 | May 9, 2017 | |
| Microsoft .NET Framework 2.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2 | KB4019109 | May 9, 2017 | |
| Microsoft .NET Framework 3.5 on Windows 10 Version 1511 for 32-bit Systems | 10586.916 | KB4019473 | May 9, 2017 |
| Microsoft .NET Framework 3.5 on Windows 10 Version 1511 for x64-based Systems | 10586.916 | KB4019473 | May 9, 2017 |
| Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for 32-bit Systems | 14393.1198 | KB4019472 | May 9, 2017 |
| Microsoft .NET Framework 3.5 on Windows 10 Version 1607 for x64-based Systems | 14393.1198 | KB4019472 | May 9, 2017 |
| Microsoft .NET Framework 3.5 on Windows 10 Version 1703 for 32-bit Systems | KB4016871 | May 9, 2017 | |
| Microsoft .NET Framework 3.5 on Windows 10 Version 1703 for x64-based Systems | KB4016871 | May 9, 2017 | |
| Microsoft .NET Framework 3.5 on Windows 10 for 32-bit Systems | 10240.17394 | KB4019474 | May 9, 2017 |
| Microsoft .NET Framework 3.5 on Windows 10 for x64-based Systems | 10240.17394 | KB4019474 | May 9, 2017 |
| Microsoft .NET Framework 3.5 on Windows 8.1 for 32-bit systems | KB4019111 | May 9, 2017 | |
| Microsoft .NET Framework 3.5 on Windows 8.1 for 32-bit systems | KB4019114 | May 9, 2017 | |
| Microsoft .NET Framework 3.5 on Windows 8.1 for x64-based systems | KB4019111 | May 9, 2017 | |
| Microsoft .NET Framework 3.5 on Windows 8.1 for x64-based systems | KB4019114 | May 9, 2017 | |
| Microsoft .NET Framework 3.5 on Windows Server 2012 | KB4019110 | May 9, 2017 | |
| Microsoft .NET Framework 3.5 on Windows Server 2012 | KB4019113 | May 9, 2017 | |
| Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation) | KB4019110 | May 9, 2017 | |
| Microsoft .NET Framework 3.5 on Windows Server 2012 (Server Core installation) | KB4019113 | May 9, 2017 | |
| Microsoft .NET Framework 3.5 on Windows Server 2012 R2 | KB4019111 | May 9, 2017 | |
| Microsoft .NET Framework 3.5 on Windows Server 2012 R2 | KB4019114 | May 9, 2017 | |
| Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation) | KB4019111 | May 9, 2017 | |
| Microsoft .NET Framework 3.5 on Windows Server 2012 R2 (Server Core installation) | KB4019114 | May 9, 2017 | |
| Microsoft .NET Framework 3.5 on Windows Server 2016 | 14393.1198 | KB4019472 | May 9, 2017 |
| Microsoft .NET Framework 3.5 on Windows Server 2016 (Server Core installation) | 14393.1198 | KB4019472 | May 9, 2017 |
| Microsoft .NET Framework 3.5.1 on Windows 7 for 32-bit Systems Service Pack 1 | KB4019112 | May 9, 2017 | |
| Microsoft .NET Framework 3.5.1 on Windows 7 for 32-bit Systems Service Pack 1 | KB4019108 | May 9, 2017 | |
| Microsoft .NET Framework 3.5.1 on Windows 7 for x64-based Systems Service Pack 1 | KB4019112 | May 9, 2017 | |
| Microsoft .NET Framework 3.5.1 on Windows 7 for x64-based Systems Service Pack 1 | KB4019108 | May 9, 2017 | |
| Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | KB4019112 | May 9, 2017 | |
| Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | KB4019108 | May 9, 2017 | |
| Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB4019112 | May 9, 2017 | |
| Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB4019108 | May 9, 2017 | |
| Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB4019112 | May 9, 2017 | |
| Microsoft .NET Framework 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB4019108 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows 7 for 32-bit Systems Service Pack 1 | KB4019112 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows 7 for 32-bit Systems Service Pack 1 | KB4019108 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows 7 for x64-based Systems Service Pack 1 | KB4019112 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows 7 for x64-based Systems Service Pack 1 | KB4019108 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows 8.1 for 32-bit systems | KB4019111 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows 8.1 for 32-bit systems | KB4019114 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows 8.1 for x64-based systems | KB4019111 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows 8.1 for x64-based systems | KB4019114 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows RT 8.1 | KB4019114 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB4019112 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB4019108 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | KB4019115 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2008 for 32-bit Systems Service Pack 2 | KB4019109 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2008 for x64-based Systems Service Pack 2 | KB4019115 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2008 for x64-based Systems Service Pack 2 | KB4019109 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2012 | KB4019110 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2012 | KB4019113 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2012 (Server Core installation) | KB4019110 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2012 (Server Core installation) | KB4019113 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 | KB4019111 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 | KB4019114 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 (Server Core installation) | KB4019111 | May 9, 2017 | |
| Microsoft .NET Framework 4.5.2 on Windows Server 2012 R2 (Server Core installation) | KB4019114 | May 9, 2017 | |
| Microsoft .NET Framework 4.6 on Windows 10 for 32-bit Systems | 10240.17394 | KB4019474 | May 9, 2017 |
| Microsoft .NET Framework 4.6 on Windows 10 for x64-based Systems | 10240.17394 | KB4019474 | May 9, 2017 |
| Microsoft .NET Framework 4.6 on Windows Server 2008 for 32-bit Systems Service Pack 2 | KB4019115 | May 9, 2017 | |
| Microsoft .NET Framework 4.6 on Windows Server 2008 for 32-bit Systems Service Pack 2 | KB4019109 | May 9, 2017 | |
| Microsoft .NET Framework 4.6 on Windows Server 2008 for x64-based Systems Service Pack 2 | KB4019115 | May 9, 2017 | |
| Microsoft .NET Framework 4.6 on Windows Server 2008 for x64-based Systems Service Pack 2 | KB4019109 | May 9, 2017 | |
| Microsoft .NET Framework 4.6.1 on Windows 10 Version 1511 for 32-bit Systems | 10586.916 | KB4019473 | May 9, 2017 |
| Microsoft .NET Framework 4.6.1 on Windows 10 Version 1511 for x64-based Systems | 10586.916 | KB4019473 | May 9, 2017 |
| Microsoft .NET Framework 4.6.2 on Windows 10 Version 1607 for 32-bit Systems | 14393.1198 | KB4019472 | May 9, 2017 |
| Microsoft .NET Framework 4.6.2 on Windows 10 Version 1607 for x64-based Systems | 14393.1198 | KB4019472 | May 9, 2017 |
| Microsoft .NET Framework 4.6.2 on Windows 7 for 32-bit Systems Service Pack 1 | KB4019112 | May 9, 2017 | |
| Microsoft .NET Framework 4.6.2 on Windows 7 for 32-bit Systems Service Pack 1 | KB4019108 | May 9, 2017 | |
| Microsoft .NET Framework 4.6.2 on Windows 7 for x64-based Systems Service Pack 1 | KB4019112 | May 9, 2017 | |
| Microsoft .NET Framework 4.6.2 on Windows 7 for x64-based Systems Service Pack 1 | KB4019108 | May 9, 2017 | |
| Microsoft .NET Framework 4.6.2 on Windows 8.1 for 32-bit systems | KB4019111 | May 9, 2017 | |
| Microsoft .NET Framework 4.6.2 on Windows 8.1 for 32-bit systems | KB4019114 | May 9, 2017 | |
| Microsoft .NET Framework 4.6.2 on Windows 8.1 for x64-based systems | KB4019111 | May 9, 2017 | |
| Microsoft .NET Framework 4.6.2 on Windows 8.1 for x64-based systems | KB4019114 | May 9, 2017 | |
| Microsoft .NET Framework 4.6.2 on Windows RT 8.1 | KB4019114 | May 9, 2017 | |
| Microsoft .NET Framework 4.6.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB4019112 | May 9, 2017 | |
| Microsoft .NET Framework 4.6.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB4019108 | May 9, 2017 | |
| Microsoft .NET Framework 4.6.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB4019112 | May 9, 2017 | |
| Microsoft .NET Framework 4.6.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB4019108 | May 9, 2017 | |
| Microsoft .NET Framework 4.6.2 on Windows Server 2012 | KB4019110 | May 9, 2017 | |
| Microsoft .NET Framework 4.6.2 on Windows Server 2012 | KB4019113 | May 9, 2017 | |
| Microsoft .NET Framework 4.6.2 on Windows Server 2012 (Server Core installation) | KB4019110 | May 9, 2017 | |
| Microsoft .NET Framework 4.6.2 on Windows Server 2012 (Server Core installation) | KB4019113 | May 9, 2017 | |
| Microsoft .NET Framework 4.6.2 on Windows Server 2012 R2 | KB4019111 | May 9, 2017 | |
| Microsoft .NET Framework 4.6.2 on Windows Server 2012 R2 | KB4019114 | May 9, 2017 | |
| Microsoft .NET Framework 4.6.2 on Windows Server 2012 R2 (Server Core installation) | KB4019111 | May 9, 2017 | |
| Microsoft .NET Framework 4.6.2 on Windows Server 2012 R2 (Server Core installation) | KB4019114 | May 9, 2017 | |
| Microsoft .NET Framework 4.6.2 on Windows Server 2016 | 14393.1198 | KB4019472 | May 9, 2017 |
| Microsoft .NET Framework 4.6.2 on Windows Server 2016 (Server Core installation) | 14393.1198 | KB4019472 | May 9, 2017 |
| Microsoft .NET Framework 4.6/4.6.1 on Windows 7 for 32-bit Systems Service Pack 1 | KB4019112 | May 9, 2017 | |
| Microsoft .NET Framework 4.6/4.6.1 on Windows 7 for 32-bit Systems Service Pack 1 | KB4019108 | May 9, 2017 | |
| Microsoft .NET Framework 4.6/4.6.1 on Windows 7 for x64-based Systems Service Pack 1 | KB4019112 | May 9, 2017 | |
| Microsoft .NET Framework 4.6/4.6.1 on Windows 7 for x64-based Systems Service Pack 1 | KB4019108 | May 9, 2017 | |
| Microsoft .NET Framework 4.6/4.6.1 on Windows 8.1 for 32-bit systems | KB4019111 | May 9, 2017 | |
| Microsoft .NET Framework 4.6/4.6.1 on Windows 8.1 for 32-bit systems | KB4019114 | May 9, 2017 | |
| Microsoft .NET Framework 4.6/4.6.1 on Windows 8.1 for x64-based systems | KB4019111 | May 9, 2017 | |
| Microsoft .NET Framework 4.6/4.6.1 on Windows 8.1 for x64-based systems | KB4019114 | May 9, 2017 | |
| Microsoft .NET Framework 4.6/4.6.1 on Windows RT 8.1 | KB4019114 | May 9, 2017 | |
| Microsoft .NET Framework 4.6/4.6.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB4019112 | May 9, 2017 | |
| Microsoft .NET Framework 4.6/4.6.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | KB4019108 | May 9, 2017 | |
| Microsoft .NET Framework 4.6/4.6.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB4019112 | May 9, 2017 | |
| Microsoft .NET Framework 4.6/4.6.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | KB4019108 | May 9, 2017 | |
| Microsoft .NET Framework 4.6/4.6.1 on Windows Server 2012 | KB4019110 | May 9, 2017 | |
| Microsoft .NET Framework 4.6/4.6.1 on Windows Server 2012 | KB4019113 | May 9, 2017 | |
| Microsoft .NET Framework 4.6/4.6.1 on Windows Server 2012 (Server Core installation) | KB4019110 | May 9, 2017 | |
| Microsoft .NET Framework 4.6/4.6.1 on Windows Server 2012 (Server Core installation) | KB4019113 | May 9, 2017 | |
| Microsoft .NET Framework 4.6/4.6.1 on Windows Server 2012 R2 | KB4019111 | May 9, 2017 | |
| Microsoft .NET Framework 4.6/4.6.1 on Windows Server 2012 R2 | KB4019114 | May 9, 2017 | |
| Microsoft .NET Framework 4.6/4.6.1 on Windows Server 2012 R2 (Server Core installation) | KB4019111 | May 9, 2017 | |
| Microsoft .NET Framework 4.6/4.6.1 on Windows Server 2012 R2 (Server Core installation) | KB4019114 | May 9, 2017 | |
| Microsoft .NET Framework 4.7 on Windows 10 Version 1703 for 32-bit Systems | KB4016871 | May 9, 2017 | |
| Microsoft .NET Framework 4.7 on Windows 10 Version 1703 for x64-based Systems | KB4016871 | May 9, 2017 | |