Hello,
If you run Exim and have local users you will want to make sure that
it is upgraded as a matter of urgency as there is a trivial
arbitrary command execution as root bug in most recent versions:
https://seclists.org/oss-sec/2019/q2/152
Even if you are the only local user you should upgrade as it's
possible, though more difficult, to exploit remotely.
Cheers,
Andy
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