diff --git a/src/python_testing/TC_MCORE_FS_1_5.py b/src/python_testing/TC_MCORE_FS_1_5.py
new file mode 100755
index 00000000000000..dbf20660e7560d
--- /dev/null
+++ b/src/python_testing/TC_MCORE_FS_1_5.py
@@ -0,0 +1,288 @@
+#
+#    Copyright (c) 2024 Project CHIP Authors
+#    All rights reserved.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License");
+#    you may not use this file except in compliance with the License.
+#    You may obtain a copy of the License at
+#
+#        http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS,
+#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#    See the License for the specific language governing permissions and
+#    limitations under the License.
+#
+
+# TODO: add to CI. See https://github.com/project-chip/connectedhomeip/issues/34676
+
+import hashlib
+import logging
+import os
+import queue
+import secrets
+import signal
+import struct
+import subprocess
+import time
+import uuid
+from dataclasses import dataclass
+
+import chip.clusters as Clusters
+from chip import ChipDeviceCtrl
+from ecdsa.curves import NIST256p
+from matter_testing_support import MatterBaseTest, TestStep, async_test_body, default_matter_test_main, type_matches
+from mobly import asserts
+from TC_SC_3_6 import AttributeChangeAccumulator
+
+# Length of `w0s` and `w1s` elements
+WS_LENGTH = NIST256p.baselen + 8
+
+
+def _generate_verifier(passcode: int, salt: bytes, iterations: int) -> bytes:
+    ws = hashlib.pbkdf2_hmac('sha256', struct.pack('<I', passcode), salt, iterations, WS_LENGTH * 2)
+    w0 = int.from_bytes(ws[:WS_LENGTH], byteorder='big') % NIST256p.order
+    w1 = int.from_bytes(ws[WS_LENGTH:], byteorder='big') % NIST256p.order
+    L = NIST256p.generator * w1
+
+    return w0.to_bytes(NIST256p.baselen, byteorder='big') + L.to_bytes('uncompressed')
+
+
+@dataclass
+class _SetupParamters:
+    setup_qr_code: str
+    manual_code: int
+    discriminator: int
+    passcode: int
+
+
+class TC_MCORE_FS_1_5(MatterBaseTest):
+    @async_test_body
+    async def setup_class(self):
+        super().setup_class()
+        self._app_th_server_process = None
+        self._th_server_kvs = None
+
+    def teardown_class(self):
+        if self._app_th_server_process is not None:
+            logging.warning("Stopping app with SIGTERM")
+            self._app_th_server_process.send_signal(signal.SIGTERM.value)
+            self._app_th_server_process.wait()
+
+        if self._th_server_kvs is not None:
+            os.remove(self._th_server_kvs)
+        super().teardown_class()
+
+    async def _create_th_server(self, port):
+        # These are default testing values
+        setup_params = _SetupParamters(setup_qr_code="MT:-24J0AFN00KA0648G00",
+                                       manual_code=34970112332, discriminator=3840, passcode=20202021)
+        kvs = f'kvs_{str(uuid.uuid4())}'
+
+        cmd = [self._th_server_app_path]
+        cmd.extend(['--secured-device-port', str(port)])
+        cmd.extend(['--discriminator', str(setup_params.discriminator)])
+        cmd.extend(['--passcode', str(setup_params.passcode)])
+        cmd.extend(['--KVS', kvs])
+
+        # TODO: Determine if we want these logs cooked or pushed to somewhere else
+        logging.info("Starting TH_SERVER")
+        self._app_th_server_process = subprocess.Popen(cmd)
+        self._th_server_kvs = kvs
+        logging.info("Started TH_SERVER")
+        time.sleep(3)
+        return setup_params
+
+    def _ask_for_vendor_commissioning_ux_operation(self, setup_params: _SetupParamters):
+        self.wait_for_user_input(
+            prompt_msg=f"Using the DUT vendor's provided interface, commission the ICD device using the following parameters:\n"
+            f"- discriminator: {setup_params.discriminator}\n"
+            f"- setupPinCode: {setup_params.passcode}\n"
+            f"- setupQRCode: {setup_params.setup_qr_code}\n"
+            f"- setupManualcode: {setup_params.manual_code}\n"
+            f"If using FabricSync Admin test app, you may type:\n"
+            f">>> pairing onnetwork 111 {setup_params.passcode}")
+
+    def steps_TC_MCORE_FS_1_5(self) -> list[TestStep]:
+        steps = [TestStep(1, "TH subscribes to PartsList attribute of the Descriptor cluster of DUT_FSA endpoint 0."),
+                 TestStep(2, "Follow manufacturer provided instructions to have DUT_FSA commission TH_SERVER"),
+                 TestStep(3, "TH waits up to 30 seconds for subscription report from the PartsList attribute of the Descriptor to contain new endpoint"),
+                 TestStep(4, "TH uses DUT to open commissioning window to TH_SERVER"),
+                 TestStep(5, "TH commissions TH_SERVER"),
+                 TestStep(6, "TH subscribes to AdministratorCommissioning attributes on DUT_FSA for the newly added endpoint identified in step 3"),
+                 TestStep(7, "TH opens commissioning window to TH_SERVER directly (not using DUT)"),
+                 TestStep(8, "TH reads CurrentFabricIndex attributes on OperationalCredentials cluster from TH_SERVER directly (not using DUT_FSA)"),
+                 TestStep(9, "TH reads AdministratorCommissioning from TH_SERVER directly (not using DUT)"),
+                 TestStep(10, "TH waits up to 10 seconds for subscription report from the AdministratorCommissioning attribute (from step 6) to reflect values from previous step")]
+        return steps
+
+    @property
+    def default_timeout(self) -> int:
+        return self.user_params.get("report_waiting_timeout_delay_sec", 10)*2 + 60
+
+    @async_test_body
+    async def test_TC_MCORE_FS_1_5(self):
+        self.is_ci = self.check_pics('PICS_SDK_CI_ONLY')
+
+        min_report_interval_sec = 0
+        max_report_interval_sec = 30
+        th_server_port = self.user_params.get("th_server_port", 5543)
+        self._th_server_app_path = self.user_params.get("th_server_app_path", None)
+        if not self._th_server_app_path:
+            asserts.fail('This test requires a TH_SERVER app. Specify app path with --string-arg th_server_app_path:<path_to_app>')
+        if not os.path.exists(self._th_server_app_path):
+            asserts.fail(f'The path {self._th_server_app_path} does not exist')
+
+        self.step(1)
+        # Subscribe to the PartsList
+        root_endpoint = 0
+        parts_list_subscription_contents = [
+            (root_endpoint, Clusters.Descriptor.Attributes.PartsList)
+        ]
+        parts_list_sub = await self.default_controller.ReadAttribute(
+            nodeid=self.dut_node_id,
+            attributes=parts_list_subscription_contents,
+            reportInterval=(min_report_interval_sec, max_report_interval_sec),
+            keepSubscriptions=False
+        )
+
+        parts_list_queue = queue.Queue()
+        parts_list_attribute_handler = AttributeChangeAccumulator(
+            name=self.default_controller.name, expected_attribute=Clusters.Descriptor.Attributes.PartsList, output=parts_list_queue)
+        parts_list_sub.SetAttributeUpdateCallback(parts_list_attribute_handler)
+        parts_list_cached_attributes = parts_list_sub.GetAttributes()
+        step_1_dut_parts_list = parts_list_cached_attributes[root_endpoint][Clusters.Descriptor][Clusters.Descriptor.Attributes.PartsList]
+
+        asserts.assert_true(type_matches(step_1_dut_parts_list, list), "PartsList is expected to be a list")
+
+        self.step(2)
+        setup_params = await self._create_th_server(th_server_port)
+        self._ask_for_vendor_commissioning_ux_operation(setup_params)
+
+        self.step(3)
+        report_waiting_timeout_delay_sec = 30
+        logging.info("Waiting for update to PartsList.")
+        start_time = time.time()
+        elapsed = 0
+        time_remaining = report_waiting_timeout_delay_sec
+
+        parts_list_endpoint_count_from_step_1 = len(step_1_dut_parts_list)
+        step_3_dut_parts_list = None
+        while time_remaining > 0:
+            try:
+                item = parts_list_queue.get(block=True, timeout=time_remaining)
+                endpoint, attribute, value = item['endpoint'], item['attribute'], item['value']
+
+                # Record arrival of an expected subscription change when seen
+                if endpoint == root_endpoint and attribute == Clusters.Descriptor.Attributes.PartsList and len(value) > parts_list_endpoint_count_from_step_1:
+                    step_3_dut_parts_list = value
+                    break
+
+            except queue.Empty:
+                # No error, we update timeouts and keep going
+                pass
+
+            elapsed = time.time() - start_time
+            time_remaining = report_waiting_timeout_delay_sec - elapsed
+
+        asserts.assert_not_equal(step_3_dut_parts_list, None, "Timed out getting updated PartsList with new endpoint")
+        set_of_step_1_parts_list_endpoint = set(step_1_dut_parts_list)
+        set_of_step_3_parts_list_endpoint = set(step_3_dut_parts_list)
+        unique_endpoints_set = set_of_step_3_parts_list_endpoint - set_of_step_1_parts_list_endpoint
+        asserts.assert_equal(len(unique_endpoints_set), 1, "Expected only one new endpoint")
+        newly_added_endpoint = list(unique_endpoints_set)[0]
+
+        self.step(4)
+
+        discriminator = 3840
+        passcode = 20202021
+        salt = secrets.token_bytes(16)
+        iterations = 2000
+        verifier = _generate_verifier(passcode, salt, iterations)
+
+        # min commissioning timeout is 3*60 seconds
+        cmd = Clusters.AdministratorCommissioning.Commands.OpenCommissioningWindow(commissioningTimeout=3*60,
+                                                                                   PAKEPasscodeVerifier=verifier,
+                                                                                   discriminator=discriminator,
+                                                                                   iterations=iterations,
+                                                                                   salt=salt)
+        await self.send_single_cmd(cmd, dev_ctrl=self.default_controller, node_id=self.dut_node_id, endpoint=newly_added_endpoint, timedRequestTimeoutMs=5000)
+
+        self.step(5)
+        self.th_server_local_nodeid = 1111
+        await self.default_controller.CommissionOnNetwork(nodeId=self.th_server_local_nodeid, setupPinCode=passcode, filterType=ChipDeviceCtrl.DiscoveryFilterType.LONG_DISCRIMINATOR, filter=discriminator)
+
+        self.step(6)
+        cadmin_subscription_contents = [
+            (newly_added_endpoint, Clusters.AdministratorCommissioning)
+        ]
+        cadmin_sub = await self.default_controller.ReadAttribute(
+            nodeid=self.dut_node_id,
+            attributes=cadmin_subscription_contents,
+            reportInterval=(min_report_interval_sec, max_report_interval_sec),
+            keepSubscriptions=False
+        )
+
+        cadmin_queue = queue.Queue()
+        # This AttributeChangeAccumulator is really just to let us know when new subscription came in
+        cadmin_attribute_handler = AttributeChangeAccumulator(
+            name=self.default_controller.name, expected_attribute=Clusters.AdministratorCommissioning.Attributes.WindowStatus, output=cadmin_queue)
+        cadmin_sub.SetAttributeUpdateCallback(cadmin_attribute_handler)
+        time.sleep(1)
+
+        self.step(7)
+        await self.default_controller.OpenCommissioningWindow(nodeid=self.th_server_local_nodeid, timeout=180, iteration=1000, discriminator=3840, option=1)
+
+        self.step(8)
+        current_fabric_index = await self.read_single_attribute_check_success(node_id=self.th_server_local_nodeid, cluster=Clusters.OperationalCredentials, attribute=Clusters.OperationalCredentials.Attributes.CurrentFabricIndex)
+
+        self.step(9)
+        th_server_directly_read_result = await self.default_controller.ReadAttribute(self.th_server_local_nodeid, [(root_endpoint, Clusters.AdministratorCommissioning)])
+        th_server_direct_cadmin = th_server_directly_read_result[root_endpoint][Clusters.AdministratorCommissioning]
+        cadmin_attr = Clusters.AdministratorCommissioning.Attributes
+        asserts.assert_equal(th_server_direct_cadmin[cadmin_attr.WindowStatus],
+                             Clusters.AdministratorCommissioning.Enums.CommissioningWindowStatusEnum.kEnhancedWindowOpen, "WindowStatus is expected to be EnhancedWindowOpen")
+        asserts.assert_equal(th_server_direct_cadmin[cadmin_attr.AdminFabricIndex],
+                             current_fabric_index, "AdminFabricIndex is unexpected")
+
+        self.step(10)
+        report_waiting_timeout_delay_sec = 10
+        logging.info("Waiting for update to AdministratorCommissioning attributes.")
+        start_time = time.time()
+        elapsed = 0
+        time_remaining = report_waiting_timeout_delay_sec
+
+        cadmin_sub_new_data = False
+        while time_remaining > 0:
+            try:
+                item = cadmin_queue.get(block=True, timeout=time_remaining)
+                endpoint, attribute, value = item['endpoint'], item['attribute'], item['value']
+
+                # Record arrival of an expected subscription change when seen
+                if endpoint == newly_added_endpoint and attribute == Clusters.AdministratorCommissioning.Attributes.WindowStatus:
+                    cadmin_sub_new_data = True
+                    break
+
+            except queue.Empty:
+                # No error, we update timeouts and keep going
+                pass
+
+            elapsed = time.time() - start_time
+            time_remaining = report_waiting_timeout_delay_sec - elapsed
+
+        asserts.assert_true(cadmin_sub_new_data,
+                            "Timed out waiting for DUT to reflect AdministratorCommissioning attributes for bridged device")
+
+        dut_read = await self.default_controller.ReadAttribute(self.dut_node_id, [(newly_added_endpoint, Clusters.AdministratorCommissioning)])
+        dut_cadmin_for_th_server = dut_read[newly_added_endpoint][Clusters.AdministratorCommissioning]
+        asserts.assert_equal(th_server_direct_cadmin[cadmin_attr.WindowStatus],
+                             dut_cadmin_for_th_server[cadmin_attr.WindowStatus], "WindowStatus incorrectly reported by DUT")
+        asserts.assert_equal(th_server_direct_cadmin[cadmin_attr.AdminFabricIndex],
+                             dut_cadmin_for_th_server[cadmin_attr.AdminFabricIndex], "AdminFabricIndex incorrectly reported by DUT")
+        asserts.assert_equal(th_server_direct_cadmin[cadmin_attr.AdminVendorId],
+                             dut_cadmin_for_th_server[cadmin_attr.AdminVendorId], "AdminVendorId incorrectly reported by DUT")
+
+
+if __name__ == "__main__":
+    default_matter_test_main()
diff --git a/src/python_testing/execute_python_tests.py b/src/python_testing/execute_python_tests.py
index 91db2b2614e56f..7e7d7d501e81b2 100644
--- a/src/python_testing/execute_python_tests.py
+++ b/src/python_testing/execute_python_tests.py
@@ -75,6 +75,7 @@ def main(search_directory, env_file):
         "TC_MCORE_FS_1_1.py",
         "TC_MCORE_FS_1_2.py",
         "TC_MCORE_FS_1_3.py",
+        "TC_MCORE_FS_1_5.py",
         "TC_OCC_3_1.py",
         "TC_OCC_3_2.py",
         "TC_BRBINFO_4_1.py",