CVE-2020-9859

HighCVSS 7.8/10Known exploited (CISA KEV)Last modified Jun 17, 2026

Description

A memory consumption issue was addressed with improved memory handling. This issue is fixed in iOS 13.5.1 and iPadOS 13.5.1, macOS Catalina 10.15.5 Supplemental Update, tvOS 13.4.6, watchOS 6.2.6. An application may be able to execute arbitrary code with kernel privileges.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-415

Affected software

VendorProductVersions
AppleiOS>= unspecified, < iOS 13.5.1 and iPadOS 13.5.1
ApplemacOS>= unspecified, < macOS Catalina 10.15.5 Supplemental Update
AppletvOS>= unspecified, < tvOS 13.4.6
ApplewatchOS>= unspecified, < watchOS 6.2.6

References

Timeline

Published
Jun 5, 2020
Last modified
Jun 17, 2026
Added to CISA KEV
Nov 3, 2021
NVD status
Analyzed

Related CVEs from 2020

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CVE-2020-9859: High severity, CVSS 7.8 | Vulnix