An out-of-bounds read was addressed with improved input validation.
https://support.apple.com/HT210588
https://support.apple.com/HT210589
https://support.apple.com/HT210590
Source: MITRE
Published: 2019-12-18
Updated: 2020-02-28
Type: CWE-125
Base Score: 7.5
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 10
Severity: HIGH
Base Score: 9.8
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 3.9
Severity: CRITICAL