Description
Exim 4 before 4.94.2 has Improper Initialization that can lead to recursion-based stack consumption or other consequences. This occurs because use of certain getc functions is mishandled when a client uses BDAT instead of DATA.
Scores
CVSS v3
7.5
EPSS
0.0182
EPSS Percentile
83.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-665
Status
published
Products (1)
exim/exim
4.88 - 4.94.2
Published
May 06, 2021
Tracked Since
Feb 18, 2026