Improper certificate validation in Microsoft C# SDK
Priority LOW 28CWE-295Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-295.
Summary
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.
Why it matters now
EPSS 0.01156 67th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Microsoft | C# SDK | Azure IoT | — | No fix listed | CNA |
| Microsoft | C SDK | Azure IoT | — | No fix listed | CNA |
| Microsoft | Java SDK | Azure IoT | — | No fix listed | CNA |
- C# SDK VendorMicrosoft Affected Azure IoT Fixed in — No fix listed CNA
- C SDK VendorMicrosoft Affected Azure IoT Fixed in — No fix listed CNA
- Java SDK VendorMicrosoft Affected Azure IoT Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:c_software_development_kit:*:*:*:*:*:azure_internet_of_things:*:* | all versions | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:csharp_software_development_kit:*:*:*:*:*:azure_internet_of_things:*:* | all versions | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:java_software_development_kit:*:*:*:*:*:azure_internet_of_things:*:* | all versions | Vulnerable | Microsoft |
- cpe:2.3:a:microsoft:c_software_development_kit:*:*:*:*:*:azure_internet_of_things:*:* Versions all versions Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:csharp_software_development_kit:*:*:*:*:*:azure_internet_of_things:*:* Versions all versions Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:java_software_development_kit:*:*:*:*:*:azure_internet_of_things:*:* Versions all versions Vulnerable ·Microsoft
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-8119
- 2026-10-03 Alias added: GHSA-vwrp-7x3m-9644
References
More Microsoft C Software Development Kit vulnerabilities
- TI-2018-06158 Improper certificate validation in Microsoft C SDK CVSS 3.0MEDIUM 5.6
Sources
- CVE-2018-8119 · CVE Program
- CVE-2018-8119 · NVD
- FIRST EPSS
- GHSA-vwrp-7x3m-9644 · GitHub Advisory Database · CC BY 4.0
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