system
Describe <CVE-2016-4643>.
user
What is <CVE-2016-4643>?
assistant
In iOS before 9.3.3, tvOS before 9.2.2, and OS X El Capitan before v10.11.6 and Security Update 2016-004, a validation issue existed in the parsing of 407 responses. This issue was addressed through improved response validation..