EPSS
Percentile
50.0%
exim4 is vulnerable to Response Injection. The vulnerability allows a malicious attacker (MitM) to respond to a mail client message where exim treats it as a trusted response.
nostarttls.secvuln.info
security-tracker.debian.org/tracker/CVE-2021-38371
www.exim.org
www.exim.org/static/doc/security/CVE-2021-38371.txt