How severe is CVE-2018-8119?

CVE-2018-8119 has a CVSS 3.x base score of 5.6, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2018-8119 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-8119?

CVE-2018-8119 primarily affects Microsoft C Software Development Kit. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-8119?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-8119 published?

CVE-2018-8119 was published on 2018-05-09 and last updated on 2026-06-17.

CVE-2018-8119

CVE-2018-8119 is a medium-severity vulnerability in Microsoft C Software Development Kit with a CVSS 3.x base score of 5.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-295.

Key facts

Severity: Medium (CVSS 3.x base score 5.6)
CVSS v2: 6.8
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Microsoft C Software Development Kit
Published: 2018-05-09
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2018-8119?: 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.
How severe is CVE-2018-8119?: CVE-2018-8119 has a CVSS 3.x base score of 5.6, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2018-8119 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-8119?: CVE-2018-8119 primarily affects Microsoft C Software Development Kit. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-8119?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-8119 published?: CVE-2018-8119 was published on 2018-05-09 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:microsoft:c_software_development_kit:*:*:*:*:*:azure_internet_of_things:*:*
cpe:2.3:a:microsoft:csharp_software_development_kit:*:*:*:*:*:azure_internet_of_things:*:*
cpe:2.3:a:microsoft:java_software_development_kit:*:*:*:*:*:azure_internet_of_things:*:*

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