CVE-2020-9819

4.3 MEDIUM CISA KEV - Actively Exploited

Published: June 09, 2020 Modified: October 23, 2025

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.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://support.apple.com/HT211168

Source: product-security@apple.com

Release Notes Vendor Advisory

https://support.apple.com/HT211169

Source: product-security@apple.com

Release Notes Vendor Advisory

https://support.apple.com/HT211175

Source: product-security@apple.com

Release Notes Vendor Advisory

https://support.apple.com/HT211176

Source: product-security@apple.com

Release Notes Vendor Advisory

https://support.apple.com/HT211168

Source: af854a3a-2127-422b-91ae-364da2661108

Release Notes Vendor Advisory

https://support.apple.com/HT211169

Source: af854a3a-2127-422b-91ae-364da2661108

Release Notes Vendor Advisory

https://support.apple.com/HT211175

Source: af854a3a-2127-422b-91ae-364da2661108

Release Notes Vendor Advisory

https://support.apple.com/HT211176

Source: af854a3a-2127-422b-91ae-364da2661108

Release Notes Vendor Advisory

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-9819

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

US Government Resource

9 reference(s) from NVD

Quick Stats

CVSS v3 Score

4.3 / 10.0

EPSS (Exploit Probability)

0.2%

42th percentile

Exploitation Status

Actively Exploited

Remediation due: 2022-05-03

Weaknesses (CWE)

CWE-787 CWE-787

Affected Vendors

apple

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