The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.
Address Book in Apple iOS before 8 relies on the hardware UID for its encryption key, which makes it easier for physically proximate attackers to obtain sensitive information by obtaining this UID.
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* versions up to 7.1.2 (inclusive)