The STARTTLS feature in Exim through 4.94.2 allows response injection (buffering) during MTA SMTP sending.
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://nostarttls.secvuln.info/