About Apple security updates
For our customers' protection, Apple doesn't disclose, discuss or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the Apple security updates page.
Apple security documents reference vulnerabilities by CVE-ID when possible.
For more information about security, see the Apple Product Security page.
macOS Catalina 10.15.5 Supplemental Update, Security Update 2020-003 High Sierra
Released 1 June 2020
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.