CVE-2021-30665

webkitgtk: Memory corruption leading to arbitrary code execution

Published Sep 8, 2021 CVSS 3.1 · 8.8 High EPSS 3.7% KEV · Listed
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..

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-4945-1 webkit2gtk security update
EUVD EUVD EUVD-2021-17582 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..
Ubuntu USN Ubuntu USN USN-5024-1 WebKitGTK vulnerabilities
History
Type Values Removed Values Added
First Time appeared Redhat rhel Els
CPEs cpe:/o:redhat:rhel_els:7
Vendors & Products Redhat rhel Els
Type Values Removed Values Added
Metrics kev

{'dateAdded': '2021-11-03'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
apple
Published
Updated
Oct 21, 2025, 11:25 PM
Reserved
Apr 13, 2021, 12:00 AM
Status
Analyzed
Published
Sep 8, 2021, 3:15 PM
Modified
Jun 17, 2026, 3:50 AM
Severity
Moderate
Public date
Jul 28, 2021, 12:00 AM