Exim was found to be prone to a privilege escalation vulnerability. An attacker can make use of this vulnerability to execute programs with root privilege.

CVE-2019-13917

Affected versions :-

Exim Exim 4.92
Exim Exim 4.91
Exim Exim 4.90
Exim Exim 4.89
Exim Exim 4.88
Exim Exim 4.87