ACTIVELY EXPLOITED

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

Facts
VendorVMware
ProductvCenter Server
Actively exploitedYes
Added to CISA KEV10 Jan 2022
CISA federal deadline24 Jan 2022
Weakness (CWE)CWE-23

Required action (CISA's text)

Apply updates per vendor instructions.

Description (NVD)

Rhttproxy as used in vCenter Server contains a vulnerability due to improper implementation of URI normalization.

SOURCES

Other VMware flaws

Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.