An integer overflow was addressed with improved input validation. This issue is fixed in iOS 14.5.1 and iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, Safari 14.1.1, macOS Big Sur 11.3.1. Processing maliciously crafted web content may lead to arbitrary code execution.
Advisories
Source ID Title
Debian DSA Debian DSA DSA-4945-1 webkit2gtk security update
EUVD EUVD EUVD-2021-17580 An integer overflow was addressed with improved input validation. This issue is fixed in iOS 14.5.1 and iPadOS 14.5.1, tvOS 14.6, iOS 12.5.3, Safari 14.1.1, macOS Big Sur 11.3.1. Processing maliciously crafted web content may lead to arbitrary code execution.
Ubuntu USN Ubuntu USN USN-5024-1 WebKitGTK vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 22 Oct 2025 09:30:00 +0900


Wed, 22 Oct 2025 05:30:00 +0900


Wed, 22 Oct 2025 04:30:00 +0900


Mon, 07 Jul 2025 23:00:00 +0900

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

Sat, 15 Feb 2025 01:45:00 +0900

Type Values Removed Values Added
CPEs cpe:2.3:a:apple:macos:*:*:*:*:*:*:*:* cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*

Wed, 05 Feb 2025 02:15:00 +0900

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

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


Mon, 03 Feb 2025 23:15:00 +0900

Type Values Removed Values Added
Metrics kev

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

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 14 Aug 2024 09:45:00 +0900

Type Values Removed Values Added
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: apple

Published:

Updated: 2025-10-21T23:25:34.065Z

Reserved: 2021-04-13T00:00:00.000Z

Link: CVE-2021-30663

cve-icon Vulnrichment

Updated: 2024-08-03T22:40:32.148Z

cve-icon NVD

Status : Analyzed

Published: 2021-09-08T15:15:13.413

Modified: 2025-10-23T14:55:43.020

Link: CVE-2021-30663

cve-icon Redhat

Severity : Moderate

Publid Date: 2021-07-28T00:00:00Z

Links: CVE-2021-30663 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses