CVE-2021-30918: 
macOS vulnerability analysis and mitigation

CVE-2021-30918 is a Lock Screen security vulnerability that affects iOS and iPadOS devices. The vulnerability was discovered in 2021 and allows users to view restricted content from the Lock Screen. This issue was addressed by Apple through improved state management in iOS 14.8.1, iPadOS 14.8.1, iOS 15.0.1, and iPadOS 15.0.1 (Apple Support HT212866, Apple Support HT212868).

The vulnerability is a state management issue in the Lock Screen functionality that could allow unauthorized access to restricted content. The vulnerability has been assigned a CVSS v3.1 Base Score of 2.4 (LOW) with the vector string CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N, indicating physical access is required for exploitation (NVD).

When exploited, the vulnerability allows a user with physical access to the device to view restricted content from the Lock Screen, potentially compromising user privacy and data confidentiality (Apple Support HT212866).

Apple has addressed this vulnerability by implementing improved state management in iOS 14.8.1, iPadOS 14.8.1, iOS 15.0.1, and iPadOS 15.0.1. Users are advised to update their devices to these or later versions to protect against this vulnerability (Apple Support HT212866, Apple Support HT212868).