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CVE-2016-4657: Apple iOS Webkit Memory Corruption Vulnerability
Apple iOS · in CISA KEV since 2022-05-24
2022-05-24added to KEV
2022-06-14federal remediation due date
66.79%EPSS exploit probability (30 days) 99.3th percentile
8.8 HIGHCVSS 3.1
Unknownknown ransomware use
2,098days from NVD publication to KEV
What it is
Apple iOS WebKit contains a memory corruption vulnerability that allows attackers to execute remote code or cause a denial-of-service (DoS) via a crafted web site. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.
Required action (CISA)
Apply updates per vendor instructions.
| CWE | CWE-119 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD published | 2016-08-25 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2016-4657.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.