CVE-2024-35512

hmq v1.5.5 is vulnerable to Denial of Service (DoS) due to a Null Pointer Exception. A remote attacker can trigger a broker crash by sending a specially crafted MQTT UNSUBSCRIBE packet with an illegal control character Topic. The failure to properly validate this field leads to a null pointer dereference, resulting in the immediate termination of the hmq process.

• https://gist.github.com/pengwGit/6ccca73a5acf91f31ff0d4185b15a3ea
• https://gist.github.com/pengwGit/6ccca73a5acf91f31ff0d4185b15a3ea

Published

May 29, 2024

Last Modified

Jun 17, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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