CVE-2020-27904

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.1% 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 existed resulting in memory corruption. This was addressed with improved state management. This issue is fixed in macOS Big Sur 11.0.1. An application may be able to execute arbitrary code with kernel privileges.

Affected products

Apple macOS: before 11.0.1 — fixed in 11.0.1

How to fix

Upgrade to a fixed version: Apple macOS 11.0.1. Check the vendor advisory for mitigations.

References

http://seclists.org/fulldisclosure/2020/Dec/32
http://seclists.org/fulldisclosure/2021/Feb/14
https://support.apple.com/en-us/HT211931
https://support.apple.com/kb/HT212147
http://seclists.org/fulldisclosure/2020/Dec/32
http://seclists.org/fulldisclosure/2021/Feb/14
https://support.apple.com/en-us/HT211931
https://support.apple.com/kb/HT212147

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