CVE-2026-8686

Published: Mag 15, 2026 Last Modified: Mag 19, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 8,7
Source: ff89ba41-3aa1-4d27-914a-91399e9639e5
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A
HIGH 7,5
Source: ff89ba41-3aa1-4d27-914a-91399e9639e5
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high

Description

AI Translation Available

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.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0003
Percentile
0,1th
Updated

EPSS Score Trend (Last 5 Days)

125

Out-of-bounds Read

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Availability Other
Potential Impacts:
Read Memory Bypass Protection Mechanism Dos: Crash, Exit, Or Restart Varies By Context
Applicable Platforms
Languages: Memory-Unsafe, C, C++
Technologies: ICS/OT
View CWE Details
Application

Coremqtt by Freertos

Product Information
Vendor Freertos
Product Coremqtt
Version 5.0.0
cpe:2.3:a:freertos:coremqtt:5.0.0:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://aws.amazon.com/security/security-bulletins/2026-032…
https://aws.amazon.com/security/security-bulletins/2026-032-aws/
https://github.com/FreeRTOS/coreMQTT/releases/tag/v5.0.1
https://github.com/FreeRTOS/coreMQTT/releases/tag/v5.0.1
https://github.com/FreeRTOS/coreMQTT/security/advisories/GH…
https://github.com/FreeRTOS/coreMQTT/security/advisories/GHSA-6qh9-r6jp-2wxc