CVE-2021-30665

CWE-787

Critical

93.0

RPS

Description

A memory corruption issue was addressed with improved state management. This issue is fixed in watchOS 7.4.1, iOS 14.5.1 and iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, macOS Big Sur 11.3.1. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..

Source: NVD

CVSS: 8.8; High · v3.1
EPSS: 3.70%; Probability of exploitation in the next 30 days (FIRST)
CISA KEV: In CISA KEV since Nov 2021
Fix commit: No known fix commit; Sources: MoreFixes, FreshFixes
Weakness: CWE-787
Published: 8 Sept 2021; Last modified 23 Oct 2025

How to read these signals: RPS · EPSS · CISA KEV · Data sources

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Data as of 7 Oct 2026, 05:16 UK time

CVE-2021-30665

Description

Signals

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