CVE-2020-9859highunder attackCWE-415

CVE-2020-9859: high-severity vulnerability in Apple iOS

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51Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA.

ssvc Actcvss 7.8epss 0.8%
from disclosure to weapon
Published on NVDJun 5
CISA KEV+516d
Action required by CISAfederal deadline: 2022-05-03

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In short

A memory handling flaw in Apple's operating systems could allow an app to consume excessive memory or crash the system. An attacker could exploit this to run malicious code with the highest level of system privileges.

Technical detail

A use-after-free vulnerability (CWE-415) in iOS, macOS, tvOS, and watchOS allows a local application to execute arbitrary code in the kernel context by triggering improper memory management. Exploitation requires the ability to run an application on the target device; successful exploitation grants kernel-level code execution.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

A memory consumption issue was addressed with improved memory handling. This issue is fixed in iOS 13.5.1 and iPadOS 13.5.1, macOS Catalina 10.15.5 Supplemental Update, tvOS 13.4.6, watchOS 6.2.6. An application may be able to execute arbitrary code with kernel privileges.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Apple · iOSApple · macOSApple · tvOSApple · watchOS
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