The remote host is missing updates announced in advisory GLSA 200410-26.

All socat users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose '>=net-misc/socat-1.4.0.3' http://www.securityspace.com/smysecure/catid.html?in=GLSA%20200410-26 http://bugs.gentoo.org/show_bug.cgi?id=68547 http://www.dest-unreach.org/socat/advisory/socat-adv-1.html

socat contains a format string vulnerability that can potentially lead to remote or local execution of arbitrary code with the privileges of the socat process.