CVE-2020-9819

MEDIUM4.3

CISA KEV

Published 2020-06-09 · Updated 2026-06-17 · Source product-security@apple.com

Summary

CVE-2020-9819 is a medium-severity (CVSS 4.3) vulnerability in Apple iOS, iPadOS, and watchOS. CISA added it to the Known Exploited Vulnerabilities catalog on November 3, 2021, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by May 3, 2022. CISA does not currently list it as used in ransomware campaigns. Apple has 95 vulnerabilities in the KEV catalog, 0 of them linked to ransomware.

All 95 known-exploited Apple vulnerabilities →

Description

A memory consumption issue was addressed with improved memory handling. This issue is fixed in iOS 13.5 and iPadOS 13.5, iOS 12.4.7, watchOS 6.2.5, watchOS 5.3.7. Processing a maliciously crafted mail message may lead to heap corruption.

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

CWE-787CWE-787

CISA Known-Exploited Vulnerability

Product: Apple — iOS, iPadOS, and watchOS

Name: Apple iOS, iPadOS, and watchOS Memory Corruption Vulnerability

Date added: 2021-11-03 · Due: 2022-05-03

Required action: Apply updates per vendor instructions.

References

View on NVD

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