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Vulnerability record · CVE-2018-0786 · published 10 January 2018

CVE-2018-0786: Microsoft .net core improper certificate validation vulnerability

Microsoft · .Net Core

Microsoft .NET Framework 2.0 SP2, 3.0 SP2, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, .NET Core 1.0 and 2.0, and PowerShell Core 6.0.0 allow a security feature bypass vulnerability due to the way certificates are validated, aka ".NET Security Feature Bypass Vulnerability."

7.5 CVSS 3.0 High EPSS 3.7% · top 10.7% CWE-295 · Improper certificate validation
7.5CVSS 3.0 base score, v2 5.0
3.7%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

Microsoft .NET Framework 2.0 SP2, 3.0 SP2, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, .NET Core 1.0 and 2.0, and PowerShell Core 6.0.0 allow a security feature bypass vulnerability due to the way certificates are validated, aka ".NET Security Feature Bypass Vulnerability."

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

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/bid/102380 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1040152 Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0786 PatchVendor Advisory
http://www.securityfocus.com/bid/102380 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1040152 Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0786 PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2018-0786), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.