The remote host is missing an update to the system as announced in the referenced advisory.
The following packages are affected: kvirc kvirc-devel
CVE-2010-2451 Multiple format string vulnerabilities in the DCC functionality in KVIrc 3.4 and 4.0 have unspecified impact and remote attack vectors.
CVE-2010-2452 Directory traversal vulnerability in the DCC functionality in KVIrc 3.4 and 4.0 allows remote attackers to overwrite arbitrary files via unknown vectors.
Solution: Update your system with the appropriate patches or software upgrades.