CVE-2026-8686DoS from MQTT v5.0 Deserialization Fault in core MQTT

Descripción

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.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://github.com/FreeRTOS/coreMQTT/releases/tag/v5.0.1 patchRelease Notes
• https://aws.amazon.com/security/security-bulletins/2026-032-aws/ vendor-advisoryVendor Advisory
• https://github.com/FreeRTOS/coreMQTT/security/advisories/GHSA-6qh9-r6jp-2wxc third-party-advisoryVendor Advisory