CVE-2021-22017: VMware vCenter Server Improper Access Control

Medium severity, CVSS 5.3. Actively exploited: in CISA KEV since 2022-01-10. EPSS: 49.2% chance of exploitation in the next 30 days.

Rhttproxy as used in vCenter Server contains a vulnerability due to improper implementation of URI normalization. A malicious actor with network access to port 443 on vCenter Server may exploit this issue to bypass proxy leading to internal endpoints being accessed.

Affected products

• VMware vCenter Server: version 6.7 only

Published 2021-09-23. Last modified 2026-06-17.