CVE-2020-9818

HighCVSS 8.8/10Known exploited (CISA KEV)Last modified Jun 17, 2026

Description

An out-of-bounds write issue was addressed with improved bounds checking. This issue is fixed in iOS 13.5 and iPadOS 13.5, iOS 12.4.7, watchOS 6.2.5. Processing a maliciously crafted mail message may lead to unexpected memory modification or application termination.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-787

Affected software

VendorProductVersions
AppleiOS>= unspecified, < iOS 13.5 and iPadOS 13.5
AppleiOS-1>= unspecified, < iOS 12.4.7
ApplewatchOS>= unspecified, < watchOS 6.2.5

References

Timeline

Published
Jun 9, 2020
Last modified
Jun 17, 2026
Added to CISA KEV
Nov 3, 2021
NVD status
Analyzed

Related CVEs from 2020

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