An integer overflow was addressed with improved input validation. This issue is fixed in tvOS 15.2, macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously crafted web content may lead to arbitrary code execution.
Advisories
Source ID Title
Debian DSA Debian DSA DSA-5060-1 webkit2gtk security update
Debian DSA Debian DSA DSA-5061-1 wpewebkit security update
EUVD EUVD EUVD-2021-17869 An integer overflow was addressed with improved input validation. This issue is fixed in tvOS 15.2, macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously crafted web content may lead to arbitrary code execution.
Ubuntu USN Ubuntu USN USN-5255-1 WebKitGTK vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 06 Mar 2026 13:45:00 +0000

Type Values Removed Values Added
First Time appeared Webkitgtk
Webkitgtk webkitgtk
Wpewebkit
Wpewebkit wpe Webkit
CPEs cpe:2.3:a:webkitgtk:webkitgtk:*:*:*:*:*:*:*:*
cpe:2.3:a:wpewebkit:wpe_webkit:*:*:*:*:*:*:*:*
Vendors & Products Webkitgtk
Webkitgtk webkitgtk
Wpewebkit
Wpewebkit wpe Webkit

Thu, 05 Mar 2026 20:15:00 +0000

Type Values Removed Values Added
References
Metrics 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'}

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'}


Thu, 05 Mar 2026 19:45:00 +0000

Type Values Removed Values Added
Metrics kev

{'dateAdded': '2026-03-05T00:00:00+00:00', 'dueDate': '2026-03-26T00:00:00+00:00'}


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

Type Values Removed Values Added
Metrics epss

{'score': 0.00422}

epss

{'score': 0.00398}


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

Type Values Removed Values Added
Metrics epss

{'score': 0.00333}

epss

{'score': 0.00422}


Sat, 12 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00218}

epss

{'score': 0.00333}


Mon, 07 Jul 2025 14:15:00 +0000

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

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: apple

Published:

Updated: 2026-03-06T05:01:17.601Z

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

Link: CVE-2021-30952

cve-icon Vulnrichment

Updated: 2024-08-03T22:48:14.237Z

cve-icon NVD

Status : Analyzed

Published: 2021-08-24T19:15:21.777

Modified: 2026-03-06T13:44:17.940

Link: CVE-2021-30952

cve-icon Redhat

Severity : Moderate

Publid Date: 2022-01-21T00:00:00Z

Links: CVE-2021-30952 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses