CVE-2021-30952

HighCVSS 7.8/10Known exploited (CISA KEV)Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-190

Affected software

No affected versions have been published.

Timeline

Published
Aug 24, 2021
Last modified
Jun 17, 2026
Added to CISA KEV
Mar 5, 2026
NVD status
Analyzed

Related CVEs from 2021

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CVE-2021-30952: High severity, CVSS 7.8 | Vulnix