The remote host is missing an update to qt announced via advisory MDKSA-2007:183.
A buffer overflow was found in how Qt expanded malformed Unicode strings. If an application linked against Qt parsed a malicious Unicode string, it could lead to a denial of service or potentially allow for the execution of arbitrary code.
Updated packages have been patched to prevent this issue. Although the problem is not exploitable in Qt4, patched packages have been issued regardless.
Solution: To upgrade automatically use MandrakeUpdate or urpmi. The verification of md5 checksums and GPG signatures is performed automatically for you.