The STARTTLS feature in Exim through 4.94.2 allows response injection (buffering) during MTA SMTP sending.
https://www.exim.org/static/doc/security/CVE-2021-38371.txt
https://www.exim.org
https://nostarttls.secvuln.info
Source: Mitre, NVD
Published: 2021-08-10
Updated: 2021-08-20
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Severity: High