A serious security flaw in older versions of Slider Revolution Premium component for WordPress is currently heavily exploited, cybercriminals aiming at more than 1,000 websites in an attempt to trigger the vulnerability. The developer of the plugin offered a patch for the glitch in version 4.2, back in February, for those who made the purchase directly from them; an auto-updater is included specifically for delivering emergency updates. However, many vulnerable instances of the plugin are st…