CVE-2020-3837highunder attackCWE-787

CVE-2020-3837: high-severity vulnerability in Apple iOS

Published · Updated

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

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 weaponsame day
Published on NVDFeb 27
1st PoCFeb 10
CISA KEV+851d
Action required by CISAfederal deadline: 2022-07-18

Apply updates per vendor instructions.

In short

A memory corruption vulnerability in Apple systems allows malicious applications to execute arbitrary code with the highest system privileges (kernel level). This could let attackers take complete control of the device.

Technical detail

A buffer overflow or out-of-bounds write (CWE-787) in memory handling permitted arbitrary code execution in kernel context. Exploitation required a malicious application with local execution capabilities; the vulnerability was patched by hardening memory management across iOS, iPadOS, macOS, tvOS, and watchOS platforms.

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 13.3.1 and iPadOS 13.3.1, macOS Catalina 10.15.3, tvOS 13.3.1, watchOS 6.1.2. An application may be able to execute arbitrary code with kernel privileges.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.