CVE-2020-3863

A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Catalina 10.15.3, Security Update 2020-001 Mojave, Security Update 2020-001 High Sierra. An application may be able to execute arbitrary code with system privileges.

• CWE-787

• https://support.apple.com/en-us/HT210919Release Notes, Vendor Advisory
• https://support.apple.com/en-us/HT210919Release Notes, Vendor Advisory

Published

Oct 27, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2020-3857A memory corruption issue was addressed with improved memory…7.8
• CVE-2020-3858A memory corruption issue was addressed with improved memory…7.8
• CVE-2020-3859An inconsistent user interface issue was addressed with impr…2.4
• CVE-2020-3860A memory corruption issue was addressed with improved input …7.8
• CVE-2020-3861The issue was addressed with improved permissions logic. Thi…7.1
• CVE-2020-3862A denial of service issue was addressed with improved memory…6.5
• CVE-2020-3864A logic issue was addressed with improved validation. This i…7.8
• CVE-2020-3865Multiple memory corruption issues were addressed with improv…8.8
• CVE-2020-3866This was addressed with additional checks by Gatekeeper on f…5.5
• CVE-2020-3867A logic issue was addressed with improved state management. …6.1
• CVE-2020-3868Multiple memory corruption issues were addressed with improv…8.8
• CVE-2020-3869An issue existed in the handling of the local user's self-vi…5.3