Multiple memory corruption issues were addressed with improved input validation. This issue is fixed in watchOS 6.1, iCloud for Windows 11.0. Multiple issues in libxslt.
https://support.apple.com/HT210727
https://support.apple.com/HT210724
Source: Mitre, NVD
Published: 2019-12-18
Updated: 2021-07-21
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical