Almost simultaneously with the release of the final version of macOS Big Sur 11.5, Apple released security updates for macOS Catalina and macOS Mojave. The patches close vulnerabilities that could be used by attackers to gain root access and execute arbitrary code.
What has been fixed in Security Update macOS Catalina and macOS Mojave
- Fixed issues in the kernel that allowed applications to execute arbitrary code.
- The ability to execute arbitrary code through kernel elements related to sound playback has been eliminated;
- The possibility of executing arbitrary code when processing malicious fonts has been eliminated;
- Fixed a vulnerability in WebKit;
- Improved Sandbox security.
In total, Apple made about 20 fixes. Some of the closed vulnerabilities had a low severity level. However, there were those that could potentially give attackers the opportunity to gain access to user data.
For this reason, representatives of the apple company strongly recommend that all users whose computers are running macOS Catalina and macOS Mojave install the update.