A buffer overflow issue was addressed with improved memory handling. This issue is fixed in iOS 12.2, macOS Mojave 10.14.4, watchOS 5.2. A malicious application may be able to elevate privileges.
https://support.apple.com/HT209602
https://support.apple.com/HT209600
https://support.apple.com/HT209599
Source: Mitre, NVD
Published: 2019-12-18
Updated: 2019-12-31
Base Score: 6.8
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P
Severity: Medium
Base Score: 7.8
Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Severity: High