diff --git a/tests/auto/qmlnetwork/CMakeLists.txt b/tests/auto/qmlnetwork/CMakeLists.txt
index 74cdf06a51..eba532b941 100644
--- a/tests/auto/qmlnetwork/CMakeLists.txt
+++ b/tests/auto/qmlnetwork/CMakeLists.txt
@@ -4,5 +4,6 @@
 add_subdirectory(qqmlnetworkinformation)
 if(QT_FEATURE_qml_ssl)
     add_subdirectory(qqmlsslconfiguration)
+    add_subdirectory(qqmlsslconfiguration_cpp)
     add_subdirectory(qqmlsslkey)
 endif()
diff --git a/tests/auto/qmlnetwork/qqmlsslconfiguration_cpp/CMakeLists.txt b/tests/auto/qmlnetwork/qqmlsslconfiguration_cpp/CMakeLists.txt
new file mode 100644
index 0000000000..3df15647b6
--- /dev/null
+++ b/tests/auto/qmlnetwork/qqmlsslconfiguration_cpp/CMakeLists.txt
@@ -0,0 +1,15 @@
+# Copyright (C) 2025 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+if(NOT QT_BUILD_STANDALONE_TESTS AND NOT QT_BUILDING_QT)
+    cmake_minimum_required(VERSION 3.16)
+    project(tst_qqmlsslconfiguration_cpp LANGUAGES CXX)
+    find_package(Qt6BuildInternals REQUIRED COMPONENTS STANDALONE_TEST)
+endif()
+
+qt_internal_add_test(tst_qqmlsslconfiguration_cpp
+    SOURCES
+        tst_qqmlsslconfiguration_cpp.cpp
+    LIBRARIES
+        Qt::QmlNetworkPrivate
+)
diff --git a/tests/auto/qmlnetwork/qqmlsslconfiguration_cpp/tst_qqmlsslconfiguration_cpp.cpp b/tests/auto/qmlnetwork/qqmlsslconfiguration_cpp/tst_qqmlsslconfiguration_cpp.cpp
new file mode 100644
index 0000000000..d125bb12a9
--- /dev/null
+++ b/tests/auto/qmlnetwork/qqmlsslconfiguration_cpp/tst_qqmlsslconfiguration_cpp.cpp
@@ -0,0 +1,88 @@
+// Copyright (C) 2025 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
+
+#include <QTest>
+#include <QSsl>
+#include <private/qqmlsslconfiguration_p.h>
+
+class tst_QQmlSslConfiguration : public QObject
+{
+    Q_OBJECT
+
+    enum class ConfType : quint8
+    {
+        DefaultSsl,
+        DefaultDtls,
+    };
+private Q_SLOTS:
+    void sslOptionsInSync_data();
+    void sslOptionsInSync();
+};
+
+static QList<QSsl::SslOption> getSslOptionsFromConfig(const QSslConfiguration &c)
+{
+    // Keep in sync with QSsl::SslOptions!
+    static constexpr
+    std::array<QSsl::SslOption, 8> allOptions { QSsl::SslOptionDisableEmptyFragments,
+                                                QSsl::SslOptionDisableSessionTickets,
+                                                QSsl::SslOptionDisableCompression,
+                                                QSsl::SslOptionDisableServerNameIndication,
+                                                QSsl::SslOptionDisableLegacyRenegotiation,
+                                                QSsl::SslOptionDisableSessionSharing,
+                                                QSsl::SslOptionDisableSessionPersistence,
+                                                QSsl::SslOptionDisableServerCipherPreference };
+
+    QList<QSsl::SslOption> result;
+    for (auto opt : allOptions) {
+        if (c.testSslOption(opt))
+            result.append(opt);
+    }
+
+    // return a sorted list
+    std::sort(result.begin(), result.end());
+    return result;
+}
+
+void tst_QQmlSslConfiguration::sslOptionsInSync_data()
+{
+    QTest::addColumn<ConfType>("type");
+
+    QTest::newRow("DefaultSslConfiguration") << ConfType::DefaultSsl;
+    QTest::newRow("DefaultDtlsConfiguration") << ConfType::DefaultDtls;
+}
+
+void tst_QQmlSslConfiguration::sslOptionsInSync()
+{
+    QFETCH(ConfType, type);
+    std::unique_ptr<QQmlSslConfiguration> conf;
+
+    if (type == ConfType::DefaultSsl)
+        conf.reset(new QQmlSslDefaultConfiguration);
+    else
+        conf.reset(new QQmlSslDefaultDtlsConfiguration);
+
+    // Default config has some options, and originally they're in sync
+    auto opts = conf->sslOptions();
+    std::sort(opts.begin(), opts.end());
+    QCOMPARE_EQ(opts, getSslOptionsFromConfig(conf->configuration()));
+
+    // set new options
+    QList<QSsl::SslOption> newOptions { QSsl::SslOptionDisableCompression,
+                                        QSsl::SslOptionDisableServerCipherPreference };
+    conf->setSslOptions(newOptions);
+
+    std::sort(newOptions.begin(), newOptions.end());
+
+    opts = conf->sslOptions();
+    std::sort(opts.begin(), opts.end());
+    // reading back the correct value
+    QCOMPARE_EQ(opts, newOptions);
+
+    // reading the values from the underlying configuration
+    QEXPECT_FAIL("", "QTBUG-137900", Continue);
+    QCOMPARE_EQ(getSslOptionsFromConfig(conf->configuration()), newOptions);
+}
+
+QTEST_MAIN(tst_QQmlSslConfiguration)
+
+#include "tst_qqmlsslconfiguration_cpp.moc"