The Microsoft Internet Explorer code maintains three different use-after-free vulnerabilities that are being patched this month.
As a vector of delivery for spearphish attacks, Microsoft Office seems to me to be the most popular target in the second half of the year. CVE-2012-0158 and CVE-2010-3333 continue to be identified in malicious attachments (both malicious Word and Excel files) in targeted attacks across the globe, while Adobe Reader and Flash, which were heavily abused, almost have fallen off the map.
Also following up the annnouncement of the Microsoft software update release, Microsoft announced the availability of security updates for Adobe Flash that effect Internet Explorer users, among others. The flaws include a RCE buffer overflow vulnerability (CVE-2012-5676), RCE integer overflow vulnerability (CVE-2012-5677), and memory corruption vulnerability (CVE-2012-5678).