CentOS Errata and Security Advisory 2009:0261
https://rhn.redhat.com/errata/RHSA-2009-0261.html
The following updated files have been uploaded and are currently syncing to the mirrors:
s390: updates/s390/RPMS/vnc-4.0-12.c4.1.s390.rpm updates/s390/RPMS/vnc-server-4.0-12.c4.1.s390.rpm
s390x: updates/s390x/RPMS/vnc-4.0-12.c4.1.s390x.rpm updates/s390x/RPMS/vnc-server-4.0-12.c4.1.s390x.rpm