You may remember not to long ago, the GHOST vulnerability found in glibc, a GNU C library. Well a new glibc vulnerability (CVE-2015-7547) has been discovered and it affects VMware ESXi 5.5 and 6.0 in addition to all versions of VMware virtual appliances running Linux such as vCenter, Orchestrator, vRealize, etc.
VMware has just released patch ESXi550-201602401-SG for ESXi 5.5 and ESXi600-201602401-SG for ESXi 6.0 which fixes the glibc vulnerability,
a patch for ESXi 6.0 has yet to be released. VMware has however posted workarounds for affected virtual appliances.