Vulnerability record · CVE-2018-8119 · published 9 May 2018

CVE-2018-8119: Microsoft c software development kit improper certificate validation vulnerability

Microsoft · C Software Development Kit

A spoofing vulnerability exists when the Azure IoT Device Provisioning AMQP Transport library improperly validates certificates over the AMQP protocol, aka "Azure IoT SDK Spoofing Vulnerability." This affects C# SDK, C SDK, Java SDK.

5.6 CVSS 3.0 Medium EPSS 1.2% · top 33.6% CWE-295 · Improper certificate validation

5.6CVSS 3.0 base score, v2 6.8

1.2%EPSS exploitation probability, 30 days

NoNot in CISA KEV

3Affected product versions listed by NVD

5References

17 Jun 2026Last modified by NVD

Description

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

Affected products

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

C Software Development Kit Microsoft

Csharp Software Development Kit Microsoft

Java Software Development Kit Microsoft

References

Link	Tags
http://www.securityfocus.com/bid/104070	Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8119	PatchVendor Advisory
https://tools.cisco.com/security/center/viewAlert.x?alertId=57754&vs_f=Alert%20RSS&vs_cat=Security%20Intelligence&vs_typ	Third Party Advisory
http://www.securityfocus.com/bid/104070	Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8119	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-2018-8119), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.