CVE-2018-12546
CVSS v3
6.5
MEDIUM
EPSS Score
0.8 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
In Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) when a client publishes a retained message to a topic, then has its access to that topic revoked, the retained message will still be published to clients that subscribe to that topic in the future. In some applications this may result in clients being able cause effects that would otherwise not be allowed.
Technical details
- Published
- 2019-03-27
Frequently asked questions
What is CVE-2018-12546?
In Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) when a client publishes a retained message to a topic, then has its access to that topic revoked, the retained message will still be published to clients that subscribe to that topic in the future. In some applications this may result in clients being able cause effects that would otherwise not be allowed.
Is CVE-2018-12546 actively exploited?
Active exploitation of CVE-2018-12546 has not been confirmed. Its EPSS score was 0.8% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2018-12546?
CVE-2018-12546 has a CVSS v3 base score of 6.5 (MEDIUM severity).
Is CVE-2018-12546 affecting your environment?
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