CVE-2021-30937

HighCVSS 7.8/10Last modified Jun 17, 2026

Description

A memory corruption vulnerability was addressed with improved locking. This issue is fixed in macOS Big Sur 11.6.2, tvOS 15.2, macOS Monterey 12.1, Security Update 2021-008 Catalina, iOS 15.2 and iPadOS 15.2, watchOS 8.3. A malicious application may be able to execute arbitrary code with kernel privileges.

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-787

Affected software

VendorProductVersions
ApplewatchOS>= unspecified, < 8.3
AppleiOS and iPadOS>= unspecified, < 15.2
ApplemacOS>= unspecified, < 12.1
ApplemacOS>= unspecified, < 11.6
ApplemacOS>= unspecified, < 15.2
ApplemacOS>= unspecified, < 2021

References

Timeline

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

Related CVEs from 2021

CVE-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 personCVE-2021-309497.8A memory corruption issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.6.2, tvOS 15.2, macOS Monter
CVE-2021-30937: High severity, CVSS 7.8 | Vulnix