Comunque apparentemente nulla se non si ha attivo Zend XMLRPC. Altrimenti ti dice qua:
If the patch cannot be applied immediately, the following instructions can be followed to temporarily disable the RPC functionality that contains the vulnerability. Please be advised, any integrations that rely on the XMLRPC API functionality will no longer work after this workaround is implemented.
1. On the Magento web server, navigate to the www-root where Magento app files are stored.
2. In the wwwroot, navigate to /app/code/core/Mage/Api/controllers.
3. Open XmlrpcController.php for editing.
4. Comment out or delete the body of the method: public indexAction()
5. Save the changes.