Apple Mac OS X < 10.14.4 - Improper Input Validation
A logic issue was addressed with improved validation. This issue is fixed in macOS Mojave 10.14.4. A malicious application may be able to elevate privileges.
A logic issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.3, Security Update 2021-002 Catalina. A malicious application may bypass Gatekeeper checks. Apple is aware of a report that this issue may have been actively exploited..