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OpenSMTPD Releases Version 6.6.4p1 to Address a Critical Vulnerability

Original release date: February 25, 2020

OpenSMTPD has released version 6.6.4p1 to address a critical vulnerability. A remote attacker could exploit this vulnerability to take control of an affected server. OpenSMTPD is an open-source server-side implementation of the Simple Mail Transfer Protocol (SMTP) that is part of the OpenBSD Project.