CVE-2021-21985
At a glance Severity CRITICAL 9.8 Exploitation Known exploited (CISA KEV) · added 2021-11-03 Exploited per ENISA since 2021-11-03 EPSS EPSS 100.00 % · percentile 100 (2026-10-27) State PUBLISHED Published 2021-05-26 Updated 2026-08-12 Assigner vmware NVD status Analyzed Description The vSphere Client (HTML5) contains a remote code execution vulnerability due to lack of input validation in the Virtual SAN Health Check plug-in which is enabled by default in vCenter Server. A malicious actor with network access to port 443 may exploit this issue to execute commands with unrestricted privileges on the underlying operating system that hosts vCenter Server.
Scores Version Score Vector Scored by CVSS 3.1 CRITICAL 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CISA-ADP CVSS 3.1 CRITICAL 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H NVD · nvd@nist.gov (Primary) CVSS 3.1 CRITICAL 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H NVD · 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary) CVSS 2.0 HIGH 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C NVD · nvd@nist.gov (Primary)
Weaknesses (CWE)
European references
CERT-FR advisories
Affected configurations (NVD CPE) cpe:2.3:a:vmware:vcenter_server:6.5:-:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.5:a:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.5:b:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.5:c:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.5:d:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.5:e:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.5:f:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.5:update1:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.5:update1b:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.5:update1c:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.5:update1d:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.5:update1e:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.5:update1g:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.5:update2:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.5:update2b:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.5:update2c:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.5:update2d:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.5:update2g:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.5:update3:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.5:update3d:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.5:update3f:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.5:update3k:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.5:update3n:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.7:-:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.7:a:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.7:b:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.7:d:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.7:update1:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.7:update1b:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.7:update2:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.7:update2a:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.7:update2c:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.7:update3:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.7:update3a:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.7:update3b:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.7:update3f:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.7:update3g:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.7:update3j:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.7:update3l:*:*:*:*:*:*cpe:2.3:a:vmware:vcenter_server:6.7:update3m:*:*:*:*:*:*+13 more Affected products
References
Sources
