diff --git a/ironic/drivers/modules/redfish/bios.py b/ironic/drivers/modules/redfish/bios.py
index 44742795e1..b0cc76b57b 100644
--- a/ironic/drivers/modules/redfish/bios.py
+++ b/ironic/drivers/modules/redfish/bios.py
@@ -230,12 +230,16 @@ class RedfishBIOS(base.BIOSInterface):
             LOG.debug('Apply BIOS configuration for node %(node_uuid)s: '
                       '%(settings)r', {'node_uuid': task.node.uuid,
                                        'settings': settings})
-
-            if bios.supported_apply_times and (
-                    sushy.APPLY_TIME_ON_RESET in bios.supported_apply_times):
-                apply_time = sushy.APPLY_TIME_ON_RESET
-            else:
-                apply_time = None
+            apply_time = None
+            try:
+                if bios.supported_apply_times and (
+                        sushy.APPLY_TIME_ON_RESET in
+                        bios.supported_apply_times):
+                    apply_time = sushy.APPLY_TIME_ON_RESET
+            except AttributeError:
+                LOG.warning('SupportedApplyTimes attribute missing for BIOS'
+                            ' configuration on node %(node_uuid)s: ',
+                            {'node_uuid': task.node.uuid})
 
             try:
                 bios.set_attributes(attributes, apply_time=apply_time)
diff --git a/ironic/tests/unit/drivers/modules/redfish/test_bios.py b/ironic/tests/unit/drivers/modules/redfish/test_bios.py
index 2ff3235fd9..1d307300f4 100644
--- a/ironic/tests/unit/drivers/modules/redfish/test_bios.py
+++ b/ironic/tests/unit/drivers/modules/redfish/test_bios.py
@@ -537,6 +537,27 @@ class RedfishBiosTestCase(db_base.DbTestCase):
                 {s['name']: s['value'] for s in settings},
                 apply_time=None)
 
+    @mock.patch.object(redfish_boot.RedfishVirtualMediaBoot, 'prepare_ramdisk',
+                       spec_set=True, autospec=True)
+    @mock.patch.object(deploy_utils, 'build_agent_options', autospec=True)
+    @mock.patch.object(redfish_utils, 'get_system', autospec=True)
+    @mock.patch.object(manager_utils, 'node_power_action', autospec=True)
+    def test_apply_configuration_no_apply_time_attr(
+            self, mock_power_action, mock_get_system, mock_build_agent_options,
+            mock_prepare):
+        settings = [{'name': 'ProcTurboMode', 'value': 'Disabled'},
+                    {'name': 'NicBoot1', 'value': 'NetworkBoot'}]
+        with task_manager.acquire(self.context, self.node.uuid,
+                                  shared=False) as task:
+            bios = mock_get_system(task.node).bios
+            del bios.supported_apply_times
+
+            task.driver.bios.apply_configuration(task, settings)
+
+            bios.set_attributes.assert_called_once_with(
+                {s['name']: s['value'] for s in settings},
+                apply_time=None)
+
 
 @mock.patch('oslo_utils.eventletutils.EventletEvent.wait',
             lambda *args, **kwargs: None)
diff --git a/releasenotes/notes/handle-missing-bios-supportedapplytimes-attr-fbacc7ca3c399e83.yaml b/releasenotes/notes/handle-missing-bios-supportedapplytimes-attr-fbacc7ca3c399e83.yaml
new file mode 100644
index 0000000000..153430deee
--- /dev/null
+++ b/releasenotes/notes/handle-missing-bios-supportedapplytimes-attr-fbacc7ca3c399e83.yaml
@@ -0,0 +1,7 @@
+---
+fixes:
+  - |
+    Fixes the bug where provisioning a Redfish managed node fails if changing
+    BIOS settings is attempted on a BMC that doesn't provide
+    supportedApplyTime information. This is done by adding handling of
+    AttributeError exception in apply_configuration() method.