CVE-2021-21992: VMware Cloud Foundation

Medium severity, CVSS 6.5. EPSS: 1% chance of exploitation in the next 30 days.

The vCenter Server contains a denial-of-service vulnerability due to improper XML entity parsing. A malicious actor with non-administrative user access to the vCenter Server vSphere Client (HTML5) or vCenter Server vSphere Web Client (FLEX/Flash) may exploit this issue to create a denial-of-service condition on the vCenter Server host.

Affected products

• VMware Cloud Foundation: from 3.0, before 3.10.2.2 (fixed in 3.10.2.2); from 4.0, before 4.3 (fixed in 4.3)
• VMware vCenter Server: version 6.5 only; version 6.7 only; version 7.0 only

Published 2021-09-22. Last modified 2026-06-17.