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CVE PROGRAM SOURCE RECORD8.7 High

CVE-2026-8686

DoS from MQTT v5.0 Deserialization Fault in core MQTT

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

FreeRTOS coreMQTT

Default version status: unaffected

  • 5.0.0affected

References