The remote host is missing updates announced in advisory GLSA 200503-27.

Currently, there is no released version of dyndnsupdate that contains a fix for these issues. The original xzabite.org distribution site is dead, the code contains several other problems and more secure alternatives exist, such as the net-dns/ddclient package. Therefore, the dyndnsupdate package has been hard-masked prior to complete removal from Portage, and current users are advised to unmerge the package: # emerge --unmerge net-misc/dyndnsupdate http://www.securityspace.com/smysecure/catid.html?in=GLSA%20200503-27 http://bugs.gentoo.org/show_bug.cgi?id=84659

Xzabite's dyndnsupdate software suffers from multiple vulnerabilities, potentially resulting in the remote execution of arbitrary code.