Exim 4 before 4.94.2 allows Out-of-bounds Write because the main function, while setuid root, copies the current working directory pathname into a buffer that is too small (on some common platforms).
Reference Links(if available):
CVSS Score (if available)
v2: / MEDIUMAV:L/AC:L/Au:N/C:C/I:C/A:C
v3: / HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H