diff --git a/netbox/netbox/authentication.py b/netbox/netbox/authentication.py
index 03241e522..2c843f076 100644
--- a/netbox/netbox/authentication.py
+++ b/netbox/netbox/authentication.py
@@ -147,7 +147,9 @@ try:
     class NBLDAPBackend(ObjectPermissionMixin, LDAPBackend_):
         def get_permission_filter(self, user_obj):
             permission_filter = super().get_permission_filter(user_obj)
-            if self.settings.FIND_GROUP_PERMS:
+            if (self.settings.FIND_GROUP_PERMS and
+                    hasattr(user_obj, "ldap_user") and
+                    hasattr(user_obj.ldap_user, "group_names")):
                 permission_filter = permission_filter | Q(groups__name__in=user_obj.ldap_user.group_names)
             return permission_filter
 except ModuleNotFoundError: