CVE-2019-5917

Azure Umqtt C vulnerability

CVSS

7.5

EPSS

21.4%

EPSS pct

97th

Exploited

No known

azure-umqtt-c (available through GitHub prior to 2017 October 6) allows remote attackers to cause a denial of service via unspecified vectors.

Affected vendor

Microsoft

Affected product

Azure Umqtt C

CVSS vector

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

Published

2019-03-12

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to availability.

Its EPSS score of 21.4% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2019-5917

Confirm whether Microsoft Azure Umqtt C is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2019-5917.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2019-5917

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2019-5917 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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