CVE-2026-107457— Memory corruption vulnerability in QMqttClient impacts Qt MQTT
Quick assessment
Affected
qt Qt
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Qt MQTT 模块中的 类存在内存破坏漏洞。在客户端与服务器之间使用某些 MQTT 5 连接设置时， 可能会破坏内存，导致应用程序崩溃。
Possible ATT&CK Techniques 1 AI
T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2026-107457
Vulnerability Information
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Vulnerability Title
Memory corruption vulnerability in QMqttClient impacts Qt MQTT
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-107457
| # | POC Description | Source Link | Shenlong Link |
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Other References for CVE-2026-107457 (2)
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