CVE-2020-3851: 
macOS vulnerability analysis and mitigation

CVE-2020-3851 is a security vulnerability discovered in Apple's IOThunderboltFamily component affecting macOS Mojave 10.14.6 and macOS High Sierra 10.13.6. The vulnerability was disclosed and patched by Apple in March 2020 as part of the macOS Catalina 10.15.4 security update (Apple Support).

The vulnerability is classified as a use-after-free issue in the IOThunderboltFamily component that could allow an application to gain elevated privileges. The issue was addressed by Apple through improved memory management implementations (Apple Support).

When exploited, this vulnerability could allow a malicious application to gain elevated privileges on the affected system, potentially leading to unauthorized access to system resources (Apple Support).

The vulnerability requires local access to exploit, as it affects the IOThunderboltFamily component which handles Thunderbolt device interactions. The exploit would need to be executed through a malicious application running on the affected system (Apple Support).

Apple addressed this vulnerability in macOS Catalina 10.15.4, Security Update 2020-002 Mojave, and Security Update 2020-002 High Sierra. Users should update their systems to these versions or later to protect against this vulnerability (Apple Support).