CVE-2020-3837

HIGH7.8

CISA KEV

Published 2020-02-27 · Updated 2026-06-17 · Source product-security@apple.com

Summary

CVE-2020-3837 is a high-severity (CVSS 7.8) vulnerability in Apple Multiple Products. CISA added it to the Known Exploited Vulnerabilities catalog on June 27, 2022, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by July 18, 2022. CISA does not currently list it as used in ransomware campaigns. Apple has 96 vulnerabilities in the KEV catalog, 0 of them linked to ransomware.

All 96 known-exploited Apple vulnerabilities →

Description

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 vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE-787CWE-787

CISA Known-Exploited Vulnerability

Product: Apple — Multiple Products

Name: Apple Multiple Products Memory Corruption Vulnerability

Date added: 2022-06-27 · Due: 2022-07-18

Required action: Apply updates per vendor instructions.

References

View on NVD

More exploited Apple vulnerabilities

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CVE-2024-27834
Multiple Products — Apple Multiple Products Improper Authentication Vulnerability
added 2026-11-04
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Multiple Products — Apple Multiple Products Out-of-Bounds Write Vulnerability
added 2026-09-29
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macOS — Apple macOS Improper Authentication Vulnerability
added 2026-08-18
CVE-2025-43510
Multiple Products — Apple Multiple Products Improper Locking Vulnerability
added 2026-03-20
CVE-2025-43520
Multiple Products — Apple Multiple Products Classic Buffer Overflow Vulnerability
added 2026-03-20
CVE-2025-31277
Multiple Products — Apple Multiple Products Buffer Overflow Vulnerability
added 2026-03-20

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