Scheduled maintenance:
Some features related to account registration and licensing may be temporarily unavailable from Friday (May 8) at 1 PM to Sunday (May 10) at 5 PM (PST).
A flaw was discovered in a way libtiff decodes special data. A potential out-of-bounds write could occur for specifically crafted images.
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-8784