The remote host is missing an update to wv2 announced via advisory DSA 1100-1. A boundary checking error has been discovered in wv2, a library for accessing Microsoft Word documents, which can lead to an integer overflow induced by processing word files. The old stable distribution (woody) does not contain wv2 packages.
For the stable distribution (sarge) this problem has been fixed in version 0.2.2-1sarge1 For the unstable distribution (sid) this problem will be fixed soon. We recommend that you upgrade your libwv packages. https://secure1.securityspace.com/smysecure/catid.html?in=DSA%201100-1