Description
A memory corruption vulnerability in the QMqttClient class of the Qt MQTT module. Under certain MQTT 5 connection settings between client and server, QMqttClient may corrupt memory, which can cause the application to crash.
Published: 2026-11-02
Score: 2.3 Low
EPSS: n/a
KEV: No
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Remediation

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History

Mon, 02 Nov 2026 08:45:00 +0000

Type Values Removed Values Added
Description A memory corruption vulnerability in the QMqttClient class of the Qt MQTT module. Under certain MQTT 5 connection settings between client and server, QMqttClient may corrupt memory, which can cause the application to crash.
Title Memory corruption vulnerability in QMqttClient impacts Qt MQTT
First Time appeared Qt
Qt qt
Qt qtmqtt
Weaknesses CWE-129
CWE-787
CPEs cpe:2.3:a:qt:qt:*:*:*:*:*:*:*:*
cpe:2.3:a:qt:qtmqtt:*:*:*:*:*:*:*:*
Vendors & Products Qt
Qt qt
Qt qtmqtt
References
Metrics cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/R:U/RE:L/U:Green'}

Subscriptions

Qt Qt Qtmqtt
cve-icon MITRE

Status: PUBLISHED

Assigner: Qt

Published:

Updated: 2026-11-02T08:38:12.500Z

Reserved: 2026-10-08T05:22:08.839Z

Link: CVE-2026-107457

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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Weaknesses
  • CWE-129

    Improper Validation of Array Index

  • CWE-787

    Out-of-bounds Write