What’s Vulnerable › Vulnerabilities

CVE-2020-9859: Apple Multiple Products Code Execution Vulnerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2021-11-03
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-06-05 · updated 2026-06-17
• Weakness: CWE-415

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.

Affected products

• Apple iPadOS: before 13.5.1 — fixed in 13.5.1
• Apple Iphone Os: before 13.5.1 — fixed in 13.5.1
• macOS: before 10.15.5 — fixed in 10.15.5
• Apple tvOS: before 13.4.6 — fixed in 13.4.6
• Apple watchOS: before 6.2.6 — fixed in 6.2.6

How to fix

Upgrade to a fixed version: Apple iPadOS 13.5.1; Apple Iphone Os 13.5.1; macOS 10.15.5; Apple tvOS 13.4.6; Apple watchOS 6.2.6. Check the vendor advisory for mitigations.

References

• https://support.apple.com/HT211214
• https://support.apple.com/HT211214
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-9859

Get alerted when CVE-2020-9859 or the next vulnerability affects your stack