CVE-2017-2893: Cesanta Mongoose

High severity, CVSS 7.5. EPSS: 24.9% chance of exploitation in the next 30 days.

An exploitable NULL pointer dereference vulnerability exists in the MQTT packet parsing functionality of Cesanta Mongoose 6.8. An MQTT SUBSCRIBE packet can cause a NULL pointer dereference leading to server crash and denial of service. An attacker needs to send a specially crafted MQTT packet over the network to trigger this vulnerability.

Affected products

• Cesanta Mongoose: version 6.8 only

Published 2017-11-07. Last modified 2026-06-17.