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CVE-2026-8686
Published: May 15, 2026
Modified: May 15, 2026
PUBLISHED
CVSS v3.1
7.5
HIGH
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.
| Vendor | Product | Versions |
|---|---|---|
FreeRTOS | coreMQTT | affected 5.0.0 |
Weaknesses (CWE)
CVSS v3.1 Details
CVSS v3.1 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
References
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