CVE-2019-5432
CVSS v3
7.5
HIGH
EPSS Score
1.6 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
A specifically malformed MQTT Subscribe packet crashes MQTT Brokers using the mqtt-packet module versions < 3.5.1, 4.0.0 - 4.1.3, 5.0.0 - 5.6.1, 6.0.0 - 6.1.2 for decoding.
Technical details
- Published
- 2019-05-06
Frequently asked questions
What is CVE-2019-5432?
A specifically malformed MQTT Subscribe packet crashes MQTT Brokers using the mqtt-packet module versions < 3.5.1, 4.0.0 - 4.1.3, 5.0.0 - 5.6.1, 6.0.0 - 6.1.2 for decoding.
Is CVE-2019-5432 actively exploited?
Active exploitation of CVE-2019-5432 has not been confirmed. Its EPSS score was 1.6% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2019-5432?
CVE-2019-5432 has a CVSS v3 base score of 7.5 (HIGH severity).
Is CVE-2019-5432 affecting your environment?
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