In iOS before 11.3, Safari before 11.1, tvOS before 11.3, watchOS before 4.3, iTunes before 12.7.4 for Windows, an array indexing issue existed in the handling of a function in javascript core. This issue was addressed with improved checks.
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2018-4210.json"