CVE-2021-30936

HighCVSS 8.8/10Last modified Jun 17, 2026

Description

A use after free issue was addressed with improved memory management. 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 8.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

No affected versions have been published.

Timeline

Published
Aug 24, 2021
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2021

CVE-2021-309377.8A memory corruption vulnerability was addressed with improved locking. This issue is fixed in macOS Big Sur 11.6.2, tvOS 15.2, macOS MontereCVE-2021-309387.7This issue was addressed with improved checks. This issue is fixed in macOS Monterey 12.1, Security Update 2021-008 Catalina, macOS Big Sur CVE-2021-309397.8An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.6.2, tvOS 15.2, macOS Monterey 12CVE-2021-309405.5A buffer overflow issue was addressed with improved memory handling. This issue is fixed in macOS Monterey 12.1, iOS 15.2 and iPadOS 15.2, mCVE-2021-309415.5A buffer overflow issue was addressed with improved memory handling. This issue is fixed in macOS Monterey 12.1, iOS 15.2 and iPadOS 15.2, mCVE-2021-309427.8Description: A memory corruption issue in the processing of ICC profiles was addressed with improved input validation. This issue is fixed iCVE-2021-309434.3An issue in the handling of group membership was resolved with improved logic. This issue is fixed in iOS 15.2 and iPadOS 15.2, watchOS 8.3,CVE-2021-309445.5Description: A logic issue was addressed with improved state management. This issue is fixed in iOS 15.2 and iPadOS 15.2, watchOS 8.3, macOSCVE-2021-309457.8This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.6.2, tvOS 15.2, macOS Monterey 12.1, Security Update CVE-2021-309465.5A logic issue was addressed with improved restrictions. This issue is fixed in macOS Monterey 12.1, watchOS 8.3, iOS 15.2 and iPadOS 15.2, mCVE-2021-309475.5An access issue was addressed with additional sandbox restrictions. This issue is fixed in macOS Big Sur 11.6.2, tvOS 15.2, macOS Monterey 1CVE-2021-309484.6An inconsistent user interface issue was addressed with improved state management. This issue is fixed in iOS 15.2 and iPadOS 15.2. A person
CVE-2021-30936: High severity, CVSS 8.8 | Vulnix