Following the recent discovery of zero day vulnerabilities in Adobe’s Reader and Acrobat XI –
“Zero-day vulnerabilities in the most recent versions of Adobe Reader and Acrobat are being actively exploited by attackers, who are emailing malicious PDFs to targets to remotely compromise their PCs.”
– the company have announced that remedies will be forthcoming at some point this week.
The issues at hand – dubbed CVE-2013-0640 and CVE-2013-0641 by Adobe – will be patched at some point after the 18th of February. The exact day that users can expect to see the patches isn’t noted so in the mean time the best means of protection is to follow Adobe’s own security advisory which states –
“Users of Adobe Reader XI and Acrobat XI for Windows can protect themselves from this exploit by enabling Protected View.To enable this setting, choose the “Files from potentially unsafe locations” option under the Edit > Preferences > Security (Enhanced) menu.”
Adobe Security Advisory for Adobe Reader and Acrobat
Either that or choose an alternative means of viewing your PDFs!!!!