Microsoft, Adobe address critical security flaws
Adobe recommends
users of Adobe Reader 9 and Acrobat 9 and earlier versions update to
Adobe Reader 9.1.2 and Acrobat 9.1.2. Adobe recommends users of Acrobat
8 update to Acrobat 8.1.6, and users of Acrobat 7 update to Acrobat
7.1.3. For Adobe Reader users who can’t update to Adobe Reader 9.1.2,
Adobe has provided the Adobe Reader 8.1.6 and Adobe Reader 7.1.3
updates.
The updates resolve more than 8 vulnerabilities discovered by a bunch of different folks, including the Apple Product Security Team and the IBM Internet Security X-Force. No word if Wolverine is a member of either team. He tends to prefer to work alone.

Security issues were patched in Microsoft Windows, Microsoft Internet Explorer and Microsoft Office, as well as in Microsoft Internet Information Services, which some businesses use. Six of the flaws were listed as critical and could allow for remote code executions - in other words, could allow someone to take control of your computer. Some can directly allow that, others elevate the hacker's permission levels, allowing them to create accounts and shut out users and, basically, take over your system or computer.
All the updates for home computers are detailed on this page, which includes a link to the patch downloads. Microsoft thanked a bunch of people for reporting the flaws, including the Zero Day Initiative and the Beaverton School District. Go Beavers!