Apple · Tvos · CVE-2016-4643
**Name of the Vulnerable Software and Affected Versions**
iOS versions prior to 9.3.3
tvOS versions prior to 9.2.2
OS X El Capitan versions prior to 10.11.6 and Security Update 2016-004
**Description**
A validation issue existed in the parsing of 407 responses, which was addressed through improved response validation.
**Recommendations**
For iOS versions prior to 9.3.3, update to version 9.3.3 or later.
For tvOS versions prior to 9.2.2, update to version 9.2.2 or later.
For OS X El Capitan versions prior to 10.11.6 and Security Update 2016-004, update to version 10.11.6 and apply Security Update 2016-004.