Exim 4 before 4.94.2 has Execution with Unnecessary Privileges. By leveraging a delete_pid_file race condition, a local user can delete arbitrary files as root. This involves the -oP and -oPX options.
https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28007-LFDIR.txt
Source: MITRE
Published: 2021-05-06
Updated: 2021-05-13
Type: CWE-269
Base Score: 6.3
Vector: AV:L/AC:M/Au:N/C:N/I:C/A:C
Impact Score: 9.2
Exploitability Score: 3.4
Severity: MEDIUM
Base Score: 6.3
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H
Impact Score: 5.2
Exploitability Score: 1
Severity: MEDIUM