CVE-2021-30869
Apple iOS, iPadOS, and macOS Type Confusion Vulnerability
Published Aug 24, 2021 · updated Jun 16, 2026 · apple ipados
A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 12.5.5, iOS 14.4 and iPadOS 14.4, macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, Security Update 2021-006 Catalina. A malicious application may be able to execute arbitrary code with kernel privileges. Apple is aware of reports that an exploit for this issue exists in the wild.
Timeline
Detection, updates, and resolution for this record.
Aug 24, 2021 · Catalog
Detected
A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 12.5.5, iOS 14.4 and iPadOS 14.4, macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, Security Update 2021-006 Catalina. A malicious application may be able to execute arbitrary code with kernel privileges. Apple is aware of reports that an exploit for this issue exists
Nov 3, 2021 · CISA KEV
Known exploited
Apply updates per vendor instructions.
Nov 17, 2021 · CISA KEV
Remediation due
Apply updates per vendor instructions.
Jun 16, 2026 · Catalog
Updated
A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 12.5.5, iOS 14.4 and iPadOS 14.4, macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, Security Update 2021-006 Catalina. A malicious application may be able to execute arbitrary code with kernel privileges. Apple is aware of reports that an exploit for this issue exists
Required action
Apply updates per vendor instructions.
CISA due date Nov 17, 2021
Affected
- cpe apple/ipadosversion unspecified
- cpe apple/iphone osversion unspecified
- cpe apple/mac os xversion unspecified
- cpe apple/mac os x10.14.6
- vendor Apple iOS, iPadOS, and macOSversion unspecified
Sources
- CISA KEVCVE-2021-30869
Apple iOS, iPadOS, and macOS contain a type confusion vulnerability in the XNU which may allow a malicious application to execute code with kernel privileges.
cisa.gov - CVE.orgCVE-2021-30869
Official CVE identifier
cve.org - FIRST EPSSCVE-2021-30869
30-day exploitation probability 4.1%
first.org - NIST NVDCVE-2021-30869
A type confusion issue was addressed with improved state handling. This issue is fixed in iOS 12.5.5, iOS 14.4 and iPadOS 14.4, macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, Security Update 2021-006 Catalina. A malicious application may b
nvd.nist.gov