bool CustomButton::OnKeyReleased(const ui::KeyEvent& event) {
  if ((state_ == STATE_DISABLED) || (event.key_code() != ui::VKEY_SPACE))
    return false;

  SetState(STATE_NORMAL);
  NotifyClick(event);
  return true;
}

This label identifies security gaps where expected security features are missing or only partially implemented, reducing protection against unauthorized access or manipulation.