Back in March Microsoft issued its second generation of patch which was intended to close a privilege escalation vulnerability used to spread the Stuxnet malware closing a portion of the vulnerability that remained after the original patch in 2010. In a bulletin today Microsoft has announced yet another iteration of the patch (archived) to close this bug as the March patch still maintained sufficient attack surface for this vulnerability to continue being exploited. Microsoft also released a tool for logging attempts to exploit this vulnerability as well as a warning that installing any new language packs after applying this patch will negate any protective effects this patch is purported to have. Windows versions including the new "Windows 10" are effected by this continuing vulnerability.