This update resolves several newly-discovered vulnerabilities.

If a user is logged on with administrative user rights, an attacker who
successfully exploited the most severe of these vulnerabilities could take
complete control of an affected system. An attacker could then install
programs; view, change, or delete data; or create new accounts with
full user rights. Users whose accounts are configured to have fewer user
rights on the system could be less impacted than users who operate with
administrative user rights.