The remote Debian host is missing a security-related update.
Aleksandar Nikolic of Cisco Talos discovered a buffer overflow vulnerability in the XML parser functionality of miniupnpc, a UPnP IGD client lightweight library. A remote attacker can take advantage of this flaw to cause an application using the miniupnpc library to crash, or potentially to execute arbitrary code with the privileges of the user running the application.
Upgrade the miniupnpc packages. For the oldstable distribution (wheezy), this problem has been fixed in version 1.5-2+deb7u1. For the stable distribution (jessie), this problem has been fixed in version 1.9.20140610-2+deb8u1.