About the security content of macOS Catalina 10.15.5 Supplemental Update, Security Update 2020-003 High Sierra - Apple Support

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macOS Catalina 10.15.5 Supplemental Update, Security Update 2020-003 High Sierra

Released June 1, 2020

Kernel

Available for: macOS High Sierra 10.13.6, macOS Catalina 10.15.5

Impact: An application may be able to execute arbitrary code with kernel privileges

Description: A memory consumption issue was addressed with improved memory handling.

CVE-2020-9859: unc0ver