Adobe has released a massive patch to fix flaws in Adobe Reader 9.1.3 and Acrobat 9.1.3, Adobe Reader 8.1.6 and Acrobat 8.1.6 for Windows, Macintosh and UNIX, and Adobe Reader 7.1.3 and Acrobat 7.1.3 for Windows and Macintosh. Adobe said that the patches covered zero-day flaw, heap, integer and buffer overflow vulnerabilities, as well as memory corruption issues that could be used in a denial of service attack. “While Adobe may be catching up to Microsoft in terms of flaws in their software, they could tear a few pages from Microsoft's playbook on how to cope,” said Sophos' Chester Wisniewski.

More info: Adobe Security Bulletin