diff --git a/odoo/addons/test_new_api/models/test_new_api.py b/odoo/addons/test_new_api/models/test_new_api.py
index 4a22fe542ce..e961886c86c 100644
--- a/odoo/addons/test_new_api/models/test_new_api.py
+++ b/odoo/addons/test_new_api/models/test_new_api.py
@@ -166,7 +166,7 @@ class Message(models.Model):
     @api.constrains('author', 'discussion')
     def _check_author(self):
         for message in self.with_context(active_test=False):
-            if message.discussion and message.author not in message.discussion.participants:
+            if message.discussion and message.author not in message.discussion.sudo().participants:
                 raise ValidationError(_("Author must be among the discussion participants."))
 
     @api.depends('author.name', 'discussion.name')
diff --git a/odoo/addons/test_new_api/tests/test_properties.py b/odoo/addons/test_new_api/tests/test_properties.py
index bc1cff2461e..1fd8224955a 100644
--- a/odoo/addons/test_new_api/tests/test_properties.py
+++ b/odoo/addons/test_new_api/tests/test_properties.py
@@ -1651,6 +1651,38 @@ class PropertiesCase(TestPropertiesMixin):
             values = message.read(['attributes'])[0]['attributes'][0]
         self.assertEqual(values['value'], (tag.id, 'Test Tag'))
 
+    @users('test')
+    def test_properties_field_no_parent_access(self):
+        """We can read the child, but not the definition record.
+
+        Check that the user does not get an `AccessError` when creating a new
+        record having a property field whose property definition is stored on
+        a record the user does not have access to. The newly created record
+        should have the right schema and should be populated with the default
+        values stored on the property definition.
+        """
+        def _mocked_check_access_rights(records, operation, raise_exception=True):
+            if records.env.su:
+                return True
+            if raise_exception:
+                raise AccessError('')
+            return False
+
+        self.env.invalidate_all()
+        with patch('odoo.addons.test_new_api.models.test_new_api.Discussion.check_access_rights', _mocked_check_access_rights):
+            message = self.env['test_new_api.message'].create({
+                'name': 'Test Message',
+                'discussion': self.discussion_1.id,
+                'author': self.user.id,
+                'attributes': {
+                    'moderator_partner_id': self.partner.id,
+                }
+            })
+            self.assertEqual(message.attributes, {
+                'discussion_color_code': 'blue',
+                'moderator_partner_id': self.partner.id
+            })
+
     def test_properties_inherits(self):
         email = self.env['test_new_api.emailmessage'].create({
             'discussion': self.discussion_1.id,
diff --git a/odoo/fields.py b/odoo/fields.py
index abab0f4c85b..d824450a915 100644
--- a/odoo/fields.py
+++ b/odoo/fields.py
@@ -3573,7 +3573,7 @@ class Properties(Field):
             current_model = env[self.model_name]
             definition_record_field = current_model._fields[self.definition_record]
             container_model_name = definition_record_field.comodel_name
-            container_id = env[container_model_name].browse(container_id)
+            container_id = env[container_model_name].sudo().browse(container_id)
 
         properties_definition = container_id[self.definition_record_field]
         if not (properties_definition or (