A logic issue was addressed with improved state management. This issue is fixed in macOS Mojave 10.14.5, Security Update 2019-003 High Sierra, Security Update 2019-003 Sierra, iOS 12.3, tvOS 12.3. Users removed from an iMessage conversation may still be able to alter state.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Iphone_os | Apple | * | 12.3 (excluding) |
| Mac_os_x | Apple | * | 10.14.5 (excluding) |
| Tvos | Apple | * | 12.3 (excluding) |