CVE-2013-2125: OpenBSD OpenSMTPD

Medium severity, CVSS 5.0. EPSS: 2.5% chance of exploitation in the next 30 days.

OpenSMTPD before 5.3.2 does not properly handle SSL sessions, which allows remote attackers to cause a denial of service (connection blocking) by keeping a connection open.

Affected products

• OpenBSD OpenSMTPD: up to and including 5.3.1

Published 2014-05-27. Last modified 2026-06-16.