A vulnerability has been found and corrected in expat: The big2_toUtf8 function in lib/xmltok.c in libexpat in Expat 2.0.1, as used in the XML-Twig module for Perl, allows context-dependent attackers to cause a denial of service via an XML document with malformed UTF-8 sequences that trigger a buffer over-read, related to the doProlog function in lib/xmlparse.c, a different vulnerability than CVE-2009-2625 and CVE-2009-3720 . Packages for 2008.0 are provided for Corporate Desktop 2008.0 customers This update provides a solution to these vulnerabilities. Update: This vulnerability was discovered in the bundled expat code in various softwares besides expat itself. As a precaution the affected softwares has preemptively been patched to prevent presumptive future exploitations of this issue.