We strongly advise that our Partners and Customers immediately upgrade to the latest patch: Zimbra 9.0.0 Patch-20. Zimbra Collaboration 9.0.0 Patch-20 has been issued on 25 October 2021.Ĭritical Security Fix: This patch contains a critical security fix that affects previous Zimbra 9.0.0 “Kepler” patches: Patch-19, Patch-18, Patch-17, Patch-16. Your Zimbra Support team is here to assist you. For questions or guidance with upgrading your operating system, please open a support case. Zimbra Support recommends all customers who are running these operating systems take immediate actions to upgrade all production systems before July 31 to ensure no interruption in your support services. With a number of supported operating systems entering end of life on July 31, 2021, Zimbra will stop releasing patches on Ubuntu 14.04, CentOS 6, Red Hat 6 and Oracle 6. Zimbra Ending Support for Ubuntu 14.04, Oracle Linux 6 and CentOS/RHEL 6
