CVE-2018-8356
A security feature bypass vulnerability exists when Microsoft .NET Framework components do not correctly validate certificates, aka ".NET…
- 5.5MediumCVSS base score
- 0.75%Exploitation in 30 daysEPSS · top 45% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By microsoft
- 4 months later
· 4 months later
Published
- 6 years later
· 6 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Medium5.5 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.75% · top 45% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.5.
Affected products
Microsoft · Microsoft .NET Framework
- affected 3.0 Service Pack 2 on Windows Server 2008 for 32-bit Systems Service Pack 2
- affected 3.0 Service Pack 2 on Windows Server 2008 for Itanium-Based Systems Service Pack 2
- affected 3.0 Service Pack 2 on Windows Server 2008 for x64-based Systems Service Pack 2
- affected 3.5 on Windows 10 for 32-bit Systems
- affected 3.5 on Windows 10 for x64-based Systems
- affected 3.5 on Windows 10 Version 1607 for 32-bit Systems
- affected 3.5 on Windows 10 Version 1607 for x64-based Systems
- affected 3.5 on Windows 10 Version 1703 for 32-bit Systems
- affected 3.5 on Windows 10 Version 1703 for x64-based Systems
- affected 3.5 on Windows 10 Version 1709 for 32-bit Systems
- affected 3.5 on Windows 10 Version 1709 for x64-based Systems
- affected 3.5 on Windows 10 Version 1803 for 32-bit Systems
- affected 3.5 on Windows 10 Version 1803 for x64-based Systems
- affected 3.5 on Windows 8.1 for 32-bit systems
- affected 3.5 on Windows 8.1 for x64-based systems
- affected 3.5 on Windows Server 2012
- affected 3.5 on Windows Server 2012 (Server Core installation)
- affected 3.5 on Windows Server 2012 R2
- affected 3.5 on Windows Server 2012 R2 (Server Core installation)
- affected 3.5 on Windows Server 2016
- affected 3.5 on Windows Server 2016 (Server Core installation)
- affected 3.5 on Windows Server, version 1709 (Server Core Installation)
- affected 3.5 on Windows Server, version 1803 (Server Core Installation)
- affected 3.5.1 on Windows 7 for 32-bit Systems Service Pack 1
- affected 3.5.1 on Windows 7 for x64-based Systems Service Pack 1
- affected 3.5.1 on Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1
- affected 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1
- affected 3.5.1 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
- affected 4.5.2 on Windows 7 for 32-bit Systems Service Pack 1
- affected 4.5.2 on Windows 7 for x64-based Systems Service Pack 1
- affected 4.5.2 on Windows 8.1 for 32-bit systems
- affected 4.5.2 on Windows 8.1 for x64-based systems
- affected 4.5.2 on Windows RT 8.1
- affected 4.5.2 on Windows Server 2008 for 32-bit Systems Service Pack 2
- affected 4.5.2 on Windows Server 2008 for x64-based Systems Service Pack 2
- affected 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1
- affected 4.5.2 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
- affected 4.5.2 on Windows Server 2012
- affected 4.5.2 on Windows Server 2012 (Server Core installation)
- affected 4.5.2 on Windows Server 2012 R2
- and 23 more
- affected 1.0
- affected 1.1
- affected 2.0
- affected 1.0
- affected 1.1
- affected 2.0
- affected 4.7.2 Developer Pack
Affected packages
6
From reviewed advisories of the GitHub Advisory Database.
- NuGetSystem.Private.ServiceModelGHSA-p9wx-v264-q34p (opens in a new tab)
- NuGetSystem.ServiceModel.DuplexGHSA-p9wx-v264-q34p (opens in a new tab)
- NuGetSystem.ServiceModel.HttpGHSA-p9wx-v264-q34p (opens in a new tab)
- NuGetSystem.ServiceModel.NetTcpGHSA-p9wx-v264-q34p (opens in a new tab)
- NuGetSystem.ServiceModel.PrimitivesGHSA-p9wx-v264-q34p (opens in a new tab)
- NuGetSystem.ServiceModel.SecurityGHSA-p9wx-v264-q34p (opens in a new tab)
References
3
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8356 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 104664 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 1041257 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2022-4735 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-p9wx-v264-q34p (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2018-8356)Record last updated .