This week VMware released the Update b for VCSA 6.7.0.

With this update VMware fixes a security issue regarding the hypervisor-assisted guest mitigation of CVE-2018-3639 for guest operating systems

The full information about the vCenter updates can be found here:
VMware vCenter Server 6.7.0b Release Notes

Version: vCenter Server 6.7.0b (
Build: 8832884

How to update the VCSA can be found here: