macOS Mojave 10.14.3 Supplemental Update for FaceTime bug

Apple has rolled out macOS Mojave 10.14.3 supplemental update that fixes the FaceTime bug that let people eavesdrop on unanswered group video calls.

Besides, the macOS Mojave 10.14.3 supplemental update addresses another security issue involving Live Photos on FaceTime. Apple didn't disclose any information on that issue yet, but ensured that it's been fixed in the new update.

Workaround:

You can deploy macOS Mojave 10.14.3 supplemental update to resume using FaceTime without any issues. To deploy this update,

Update vulnerability database by clicking the Update Now button in the left tree view under Patches tab.
Navigate to systems tab and click on Scan systems under scan systems to detect the missing patches.
Now, navigate to Patches>missing patches.
Search for macOS Mojave 10.14.3 Supplemental Update for FaceTime bug or Patch ID 601781 and select the patch.
Click on install patch to create a patch deployment task.