CVE-2021-30683

HighCVSS 7.8/10Last modified Jun 17, 2026

Description

A use after free issue was addressed with improved memory management. This issue is fixed in macOS Big Sur 11.4, Security Update 2021-003 Catalina, Security Update 2021-004 Mojave. A malicious application could execute arbitrary code leading to compromise of user information.

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-416

Affected software

No affected versions have been published.

Timeline

Published
Sep 8, 2021
Last modified
Jun 17, 2026
NVD status
Modified

Related CVEs from 2021

CVE-2021-306847.8A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.4, Security Update 2021-003 Catalina. A CVE-2021-306855.5This issue was addressed with improved checks. This issue is fixed in tvOS 14.6, iOS 14.6 and iPadOS 14.6, Security Update 2021-003 CatalinaCVE-2021-306865.5An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in tvOS 14.6, iOS 14.6 and iPadOS 14.6, Security UpdaCVE-2021-306875.5An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in tvOS 14.6, Security Update 2021-004 Mojave, iOS 14CVE-2021-306888.8A malicious application may be able to break out of its sandbox. This issue is fixed in macOS Big Sur 11.4, Security Update 2021-003 CatalinCVE-2021-306896.1A logic issue was addressed with improved state management. This issue is fixed in tvOS 14.6, iOS 14.6 and iPadOS 14.6, Safari 14.1.1, macOSCVE-2021-306909.8Multiple issues in apache were addressed by updating apache to version 2.4.46. This issue is fixed in Security Update 2021-004 Mojave. MultiCVE-2021-306915.5An information disclosure issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.4, Security Update 202CVE-2021-306925.5An information disclosure issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.4, Security Update 202CVE-2021-306937.8A validation issue was addressed with improved logic. This issue is fixed in macOS Big Sur 11.4, Security Update 2021-003 Catalina, SecurityCVE-2021-306945.5An information disclosure issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.4, Security Update 202CVE-2021-306955.5An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Big Sur 11.4, Security Update 2021-003 Catal