CVE Catalog

CVE-2026-107457

LowCVSS 2.3
Published: Translated: NVD NIST

Summary

A memory corruption vulnerability exists 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.

Risk Assessment

Memory corruption can lead to crashes of applications using Qt MQTT, causing service interruptions or data loss. Depending on the context, it may also pose a risk of further exploitation.

Recommendation

Upgrade the Qt MQTT module to a version containing the fix for this vulnerability. Until then, consider restricting or controlling MQTT 5 connection settings between client and server.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS