An issue existed in the handling of links in encrypted PDFs. This issue was addressed by adding a confirmation prompt. This issue is fixed in macOS Catalina 10.15. An attacker may be able to exfiltrate the contents of an encrypted PDF.
https://support.apple.com/kb/HT210722
https://support.apple.com/HT210634
Source: Mitre, NVD
Published: 2019-12-18
Updated: 2022-01-01
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N
Severity: Medium
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Severity: High