CVE-2021-30661CISA KEVEPSS p91.2%

CVE-2021-30661Apple Multiple Products WebKit Storage Use-After-Free Vulnerability

Apple / Multiple Products

Description

Apple iOS, iPadOS, macOS, tvOS, watchOS, and Safari WebKit Storage contain 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.

Scoring

EPSS4.49% probability of exploitation · percentile 91.2% · 2026-10-05T12:00:23Z

CISA KEV entry

Added to KEV: 2021-11-03

(incoming)1

TypeTargetConfidenceTier
KEVEntryApple Multiple Products WebKit Storage Use-After-Free Vulnerabilitykev-cve-2021-306610%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
Apple iOS WebKit Use-After-Free Vulnerability
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Apple iOS, iPadOS, macOS Use-After-Free Vulnerability
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Apple Multiple Products WebKit Memory Corruption Vulnerability
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Apple Multiple Products WebKit Use-After-Free Vulnerability
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Apple iOS, iPadOS, and macOS Webkit Use-After-Free Vulnerability
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Apple Multiple Products Use-After-Free WebKit Vulnerability
Sourced from NVD + CISA KEV + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.