Macos High Sierra 10.13.1 Jun 2026

In addition to having a compatible Mac, the system required and 14.3GB of available storage space to perform the upgrade.

Dubbed a "remote code execution" vulnerability, this flaw could theoretically allow a hacker to take control of a Mac simply by having the user view a malicious disk image in the Finder or even just via a preview. This was reminiscent of the vectors used by the "WannaCry" ransomware that had plagued Windows users earlier that year. macos high sierra 10.13.1