VIM version 8.0.1187 (and other versions most likely) ignores umask when creating a swap file ("[ORIGINAL_FILENAME].swp") resulting in files that may be world readable or otherwise accessible in ways not intended by the user running the vi binary.
http://www.openwall.com/lists/oss-security/2017/10/31/1
http://security.cucumberlinux.com/security/details.php?id=120
Source: Mitre, NVD
Published: 2017-10-31
Updated: 2025-04-20
Base Score: 2.1
Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N
Severity: Low
Base Score: 5.5
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Severity: Medium
EPSS: 0.0005