CVE-2020-3837VulnerabilityPublished 06/27/2022Updated 10/24/2026

CVE-2020-3837: Apple Multiple Products Memory Corruption Vulnerability

Affects Apple Multiple ProductsSource CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 06/27/2022
KEV deadline: 07/18/2022
EPSS: 14.8% chance of exploitation in 30 days – higher than 96% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2020-3837 (opens in a new tab)

Description

A memory corruption vulnerability exists in multiple Apple operating systems including iOS, iPadOS, macOS, tvOS, and watchOS. This flaw could allow an application to execute code with kernel privileges, potentially leading to full system compromise. The vulnerability has been exploited in the wild. No specific affected versions or patch information are provided in the available data.

Summary

CVE-2020-3837 is a memory corruption vulnerability affecting multiple Apple products: iOS, iPadOS, macOS, tvOS, and watchOS. The vulnerability could enable an application to execute arbitrary code with kernel-level privileges. The vulnerability is classified under CWE-787 (Out-of-bounds Write). Exploitation in the wild has been confirmed. No vendor advisory or patch details are included in the provided information.

Impact

Successful exploitation allows an application to execute code with kernel privileges, which can lead to complete system compromise, unauthorized access to sensitive data, and control over the affected device. The vulnerability has been exploited in the wild, indicating active threat scenarios.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users and administrators should monitor Apple security advisories for updates and apply patches promptly once available.

Weaknesses

CWE-787Out-of-bounds Write (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 12:05:16 UTC

Weaknesses

References

Related threats