Vulnerability Details CVE-2026-8686
Missing bounds validation in the MQTT v5.0 property parser in coreMQTT before 5.0.1 allows an MQTT broker to cause a denial of service by sending a crafted packet.
To remediate this issue, users should upgrade to v5.0.1.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.004
EPSS Ranking 30.9%
CVSS Severity
CVSS v3 Score 7.5
References