CVE-2021-1755: Apple macOS

Low severity, CVSS 2.4. EPSS: 0.3% chance of exploitation in the next 30 days.

A lock screen issue allowed access to contacts on a locked device. This issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.0.1. A person with physical access to an iOS device may be able to access contacts from the lock screen.

Affected products

• Apple macOS: before 11.0.1 (fixed in 11.0.1)

Published 2021-04-02. Last modified 2026-06-17.