What’s Vulnerable › Vulnerabilities

CVE-2020-9974

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-12-08 · updated 2026-06-17

Description

A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.0.1, iOS 14.2 and iPadOS 14.2, tvOS 14.2, watchOS 7.1. A malicious application may be able to determine kernel memory layout.

Affected products

• Apple iPadOS: before 14.2 — fixed in 14.2
• Apple Iphone Os: before 14.2 — fixed in 14.2
• macOS: before 11.0.1 — fixed in 11.0.1
• Apple tvOS: before 14.2 — fixed in 14.2
• Apple watchOS: before 7.1 — fixed in 7.1

How to fix

Upgrade to a fixed version: Apple iPadOS 14.2; Apple Iphone Os 14.2; macOS 11.0.1; Apple tvOS 14.2; Apple watchOS 7.1. Check the vendor advisory for mitigations.

References

• http://seclists.org/fulldisclosure/2020/Dec/26
• http://seclists.org/fulldisclosure/2020/Dec/32
• https://support.apple.com/en-us/HT211928
• https://support.apple.com/en-us/HT211929
• https://support.apple.com/en-us/HT211930
• https://support.apple.com/en-us/HT211931
• https://support.apple.com/kb/HT212011
• http://seclists.org/fulldisclosure/2020/Dec/26
• http://seclists.org/fulldisclosure/2020/Dec/32
• https://support.apple.com/en-us/HT211928
• https://support.apple.com/en-us/HT211929
• https://support.apple.com/en-us/HT211930

Get alerted when CVE-2020-9974 or the next vulnerability affects your stack