CVE-2021-30762Actively exploitedAdded to KEV 2021-11-03

Apple iOS WebKit Use-After-Free Vulnerability

Apple, iOS

Description

Apple iOS WebKit contains a use-after-free vulnerability that leads to code execution when processing maliciously crafted web content. 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.

CVSS severity for this advisory hasn't been enriched from NVD yet, check back shortly.

EPSS, exploit probability

High

11.0%

estimated chance of real-world exploitation in the next 30 days, higher than 95.9% of every CVE FIRST.org scores

Refreshed 10/28/2026, via FIRST.org's EPSS model, not CVSS, this measures likelihood of exploitation, not how severe it would be.

Required action

Apply updates per vendor instructions.

CISA-recommended due date: 2021-11-17

CWE-416

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