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.
Reference Links(if available):
CVSS Score (if available)
v2: / HIGHAV:N/AC:M/Au:N/C:C/I:C/A:C
v3: / HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H