The latest version that Adobe released for Linux and Unix was Adobe Reader 9. Adobe stopped supporting it on 6/26/2013. It's disappointing that they kept providing downloads of unsupported software until now. Red Hat put out an advisory in last year that said:

"Red Hat advises users to reconsider further use of Adobe Reader for Linux, as it may contain known, unpatched security issues... Red Hat will no longer provide security updates to these packages and recommends that customers not use this application on Red Hat Enterprise Linux effective immediately."

http://www.redhat.com/archives/rhsa-announce/2013-October/ms...