Description
A type confusion issue was addressed with improved state handling. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, tvOS 14.4, watchOS 7.3, iOS 14.4 and iPadOS 14.4, Safari 14.0.3. Processing maliciously crafted web content may lead to arbitrary code execution.
Published: 2021-04-02
Score: 8.8 High
EPSS: < 1% Very Low
KEV: Yes
Impact: n/a
Action: n/a
AI Analysis

No analysis available yet.

Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Debian DSA Debian DSA DSA-4877-1 webkit2gtk security update
EUVD EUVD EUVD-2021-7253 A type confusion issue was addressed with improved state handling. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, tvOS 14.4, watchOS 7.3, iOS 14.4 and iPadOS 14.4, Safari 14.0.3. Processing maliciously crafted web content may lead to arbitrary code execution.
Ubuntu USN Ubuntu USN USN-4894-1 WebKitGTK vulnerabilities
History

Wed, 22 Oct 2025 00:30:00 +0000


Tue, 21 Oct 2025 20:30:00 +0000


Tue, 21 Oct 2025 19:30:00 +0000


Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.0015}

epss

{'score': 0.00238}


Tue, 15 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00125}

epss

{'score': 0.0015}


Mon, 07 Jul 2025 14:00:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Els
CPEs cpe:/o:redhat:rhel_els:7
Vendors & Products Redhat rhel Els

Wed, 29 Jan 2025 18:15:00 +0000

Type Values Removed Values Added
Metrics kev

{'dateAdded': '2022-05-04'}

ssvc

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


Wed, 14 Aug 2024 01:00:00 +0000

Type Values Removed Values Added
References

Subscriptions

Apple Ipados Iphone Os Mac Os X Macos Tvos Watchos
Fedoraproject Fedora
Redhat Enterprise Linux Rhel Els
Webkitgtk Webkitgtk
cve-icon MITRE

Status: PUBLISHED

Assigner: apple

Published:

Updated: 2025-10-21T23:25:50.136Z

Reserved: 2020-12-08T00:00:00.000Z

Link: CVE-2021-1789

cve-icon Vulnrichment

Updated: 2024-08-03T16:25:05.947Z

cve-icon NVD

Status : Analyzed

Published: 2021-04-02T18:15:21.747

Modified: 2025-10-23T18:01:47.133

Link: CVE-2021-1789

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-03-22T00:00:00Z

Links: CVE-2021-1789 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses