WebKit in Apple iOS before 9.3.5 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2016-4657
https://support.apple.com/HT207107
Source: Mitre, NVD
Published: 2016-08-25
Updated: 2026-04-21
Known Exploited Vulnerability (KEV)
Base Score: 6.8
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P
Severity: Medium
Base Score: 8.8
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Severity: High
EPSS: 0.79432