This update also fixes other serious security vulnerabilities, including an issue that could cause an application to run arbitrary code using kernel privileges by exploiting a vulnerability on the IOHIDFamily API. It also patches an issue that could lead to arbitrary code execution when playing a malicious sound file.
The security update is included with macOS High Sierra 10.13.3 and it is also available as a separate security update for users of Sierra on 10.12.6 and El Capitan on 10.11.6. Check the Mac App Store for the updates.
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