The remote host is missing an update to samba announced via advisory DSA 2004-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%202004-1

Two local vulnerabilities have been discovered in samba, a SMB/CIFS file, print, and login server for Unix. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2009-3297 Ronald Volgers discovered that a race condition in mount.cifs allows local users to mount remote filesystems over arbitrary mount points. CVE-2010-0547 Jeff Layton discovered that missing input sanitising in mount.cifs allows denial of service by corrupting /etc/mtab. For the stable distribution (lenny), these problems have been fixed in version 2:3.2.5-4lenny9. For the unstable distribution (sid), these problems have been fixed in version 2:3.4.5~dfsg-2. We recommend that you upgrade your samba packages.