The remote host is missing an update to the system as announced in the referenced advisory.
WordPress <= 2.6.1 - SQL Truncation Vulnerability #2
FreeBSD : wordpress -- remote privilege escalation (884fced7-7f1c-11dd-a66a-0019666436c2)
Fedora Update for wordpress FEDORA-2008-7760
Fedora Update for wordpress FEDORA-2008-7902
[SECURITY] [DSA 1871-1] New wordpress packages fix several vulnerabilities
wordpress - regression fix