CVE-2020-27950mediumunder attackCWE-665

CVE-2020-27950: medium-severity vulnerability in Apple macOS

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70Vexday Risk Score

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

ssvc Actcvss 5.5epss 17%
from disclosure to weaponsame day
Published on NVDDec 8
1st PoCDec 1
CISA KEV+330d
Action required by CISAfederal deadline: 2022-05-03

Apply updates per vendor instructions.

In short

A memory initialization flaw allows malicious apps to read sensitive kernel memory that should be hidden. This could expose passwords, encryption keys, or other confidential data stored in the system.

Technical detail

Improper initialization of memory regions (CWE-665) permits a local malicious application to disclose kernel memory contents without proper access controls. The vulnerability requires the attacker to execute code on the target device; successful exploitation may leak sensitive kernel data including cryptographic material or process information.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

A memory initialization issue was addressed. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.1, iOS 12.4.9, watchOS 6.2.9, Security Update 2020-006 High Sierra, Security Update 2020-006 Mojave, iOS 14.2 and iPadOS 14.2, watchOS 5.3.9, macOS Catalina 10.15.7 Supplemental Update, macOS Catalina 10.15.7 Update. A malicious application may be able to disclose kernel memory.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
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