The issue was addressed with improved permissions logic. This issue is fixed in macOS Monterey 12.0.1, macOS Big Sur 11.6.1. An unprivileged application may be able to edit NVRAM variables.
https://support.apple.com/kb/HT212871
https://support.apple.com/en-us/HT212872
https://support.apple.com/en-us/HT212869
Source: Mitre, NVD
Published: 2021-08-24
Updated: 2023-11-07
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 5.5
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N