CVE-2021-30869highunder attackCWE-843

CVE-2021-30869: high-severity vulnerability in Apple macOS

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51Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA.

ssvc Actcvss 7.8epss 4.2%
from disclosure to weapon
Published on NVDAug 24
CISA KEV+71d
Action required by CISAfederal deadline: 2021-11-17

Apply updates per vendor instructions.

In short

A type confusion flaw in Apple's kernel allows a malicious app to run code with the highest system privileges. This is dangerous because it gives attackers complete control over your device.

Technical detail

A type confusion vulnerability in kernel state handling allows a local attacker with the ability to execute code as the compromised user to elevate privileges and execute arbitrary code in kernel context. The issue affects iOS, macOS, and iPadOS, and active exploits in the wild have been documented.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

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.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
Apple · iOS and iPadOSApple · macOS
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