A logic issue was addressed with improved state management. This issue is fixed in iOS 15 and iPadOS 15. In certain situations, the baseband would fail to enable integrity and ciphering protection.
https://support.apple.com/kb/HT212807
https://support.apple.com/en-us/HT212814
http://seclists.org/fulldisclosure/2021/Oct/61
Source: Mitre, NVD
Published: 2021-10-19
Updated: 2022-03-25
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Severity: High