The remote host is missing an update to drupal6 announced via advisory DSA 1930-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%201930-1

Several vulnerabilities have been found in drupal6, a fully-featured content management framework. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2009-2372 Gerhard Killesreiter discovered a flaw in the way user signatures are handled. It is possible for a user to inject arbitrary code via a crafted user signature. (SA-CORE-2009-007) CVE-2009-2373 Mark Piper, Sven Herrmann and Brandon Knight discovered a cross-site scripting issue in the forum module, which could be exploited via the tid parameter. (SA-CORE-2009-007) CVE-2009-2374 Sumit Datta discovered that certain drupal6 pages leak sensible information such as user credentials. (SA-CORE-2009-007) Several design flaws in the OpenID module have been fixed, which could lead to cross-site request forgeries or privilege escalations. Also, the file upload function does not process all extensions properly leading to the possible execution of arbitrary code. (SA-CORE-2009-008) For the stable distribution (lenny), these problems have been fixed in version 6.6-3lenny3. The oldstable distribution (etch) does not contain drupal6. For the testing distribution (squeeze) and the unstable distribution (sid), these problems have been fixed in version 6.14-1. We recommend that you upgrade your drupal6 packages.