A parsing issue in the handling of directory paths was addressed with improved path validation. This issue is fixed in macOS Big Sur 11.0.1. A malicious application may be able to break out of its sandbox.
http://seclists.org/fulldisclosure/2020/Dec/32
http://seclists.org/fulldisclosure/2020/Dec/26
https://support.apple.com/kb/HT212011
https://support.apple.com/en-us/HT211931
Source: Mitre, NVD
Published: 2020-12-08
Updated: 2022-10-14
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 6.3
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
EPSS: 0.00789