CVE-2020-27894

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-12-08 · updated 2026-06-17

Description

The issue was addressed with additional user controls. This issue is fixed in macOS Big Sur 11.0.1. Users may be unable to remove metadata indicating where files were downloaded from.

Affected products

Apple macOS: from 11.0 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
https://support.apple.com/en-us/HT211931
http://seclists.org/fulldisclosure/2020/Dec/32
https://support.apple.com/en-us/HT211931

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