CVE-2021-30883highunder attackCWE-787

CVE-2021-30883: high-severity vulnerability in Apple macOS

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76Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA and has a public proof of concept.

ssvc Actcvss 7.8epss 15%
from disclosure to weapon48 days
Published on NVDAug 24
1st PoC+48d
CISA KEV+272d
Action required by CISAfederal deadline: 2022-06-13

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In short

A memory corruption flaw in Apple's operating systems allows malicious apps to run harmful code with the highest system privileges. This is a critical vulnerability because it gives attackers full control over your device, and Apple confirms it was being actively exploited.

Technical detail

Memory corruption vulnerability (CWE-787) in iOS, iPadOS, macOS, tvOS, and watchOS allows a local application to achieve kernel-level code execution through improper memory handling. The vulnerability affects multiple OS versions and was actively exploited in the wild prior to patching; privilege escalation to kernel context enables complete system compromise.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 15.0.2 and iPadOS 15.0.2, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, tvOS 15.1, watchOS 8.1, macOS Big Sur 11.6.1. An application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited..
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
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
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