Adobes Reader and Acrobat software on both Windows and Apple systems need to update their software ASAP. Adobe released Bulletin APSB11-24, addressing at least thirteen memory corruption flaws, and several privilege escalation, logic flaw, and bypass issues. Reader X sandbox attack 0day was even publicly demonstrated at Blackhat presentation Playing In The Reader X Sandbox a month ago. To manually update Reader X, you can open Reader X -> Help -> Check for Updates and follow the instructions to download and install the updates from there.”]
Source: https://securelist.com/adobe-september-2011-patch-release/30947/