CVE-2020-9859Apple Multiple Products Code Execution Vulnerability

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.

7.8 HIGHEPSS 0.82%⚡ Known Exploited (CISA KEV)NVD: Analyzed

Last updated: 2026-06-17 03:28 UTC

OverviewCVSS details

7.8HIGHCVSS 3.1

Score source: NVD
NVD status: Analyzed
Published: Jun 5, 2020
Assigner: apple

Affected

iOS (Apple)

Versions: before iOS 13.5.1 and iPadOS 13.5.1
Fixed in: iOS 13.5.1 and iPadOS 13.5.1

+3 more products →

Exploitation

Public exploit: None listed
CISA KEV: Listed · Nov 3, 2021
KEV due date: May 3, 2022
Ransomware use: Unknown
SSVC: Exploitation active · Automatable no · Impact total

EPSS · FIRST, scored Nov 7

0.82%chance of exploitation in 30 days

Higher than 57.75% of CVEs

CVSS 3.1 · NVD

7.8High

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

Attack vector: Local
Attack complexity: Low
Privileges required: Low
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

CVSS 2.0 · NVD

7.2High

AV:L/AC:L/Au:N/C:C/I:C/A:C

Attack vector: Local
Attack complexity: Low
Authentication: None
Confidentiality impact: Complete
Integrity impact: Complete
Availability impact: Complete

NVD status: Analyzed

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
7.8	HIGH	3.1NVD	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2	HIGH	2.0NVD	AV:L/AC:L/Au:N/C:C/I:C/A:C

CISA required action

⚡ Known exploited · remediation due May 3, 2022

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Details

CVE ID: CVE-2020-9859
Status: Analyzed
Assigner (CNA): apple
Published: Jun 5, 2020
Last modified: 2026-06-17 03:28 UTC
Weaknesses: CWE-415

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-08 09:17 UTC.