Is CVE-2020-9859 actively exploited?

CVE-2020-9859 has no public evidence of in-the-wild exploitation as of 2025-10-23.

What is the CVSS score for CVE-2020-9859?

CVE-2020-9859 has a CVSS score of 7.8 (HIGH severity). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2020-9859?

Patch guidance is available from apple security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2020-9859.

Fix CVE-2020-9859 - HIGH apple ipados

Q: Which products are affected by CVE-2020-9859?

5 products: apple ipados, apple iphone os, apple mac os x, apple tvos, apple watchos.

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.

CVSS Metrics

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector: local
Complexity: low
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-415 CWE-415

Metadata

Primary Vendor: APPLE
Published: 6/5/2020
Last Modified: 10/23/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

CVE-2020-9859

Description

CVSS Metrics

Metadata

Affected Products

Remediation Guidance

Executive Summary