CVE-2017-2895: Cesanta Mongoose

High severity, CVSS 8.2. EPSS: 1.3% chance of exploitation in the next 30 days.

An exploitable arbitrary memory read vulnerability exists in the MQTT packet parsing functionality of Cesanta Mongoose 6.8. A specially crafted MQTT SUBSCRIBE packet can cause an arbitrary out-of-bounds memory read potentially resulting in information disclosure 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.