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AEGLIX vulnerability intelligence

CVE-2021-21985

CRITICAL · CVSS 9.8 · Analyzed

Published: 2021-05-26 · Updated: 2026-08-12 · Source: NVD

Vulnerability overview

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.

Severity and scoring

CVSS score
9.8 · CRITICAL
CVSS version
3.1
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-20, CWE-470, CWE-918

CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.

Known exploitation and remediation

Listed in CISA’s Known Exploited Vulnerabilities catalog.

Affected product
VMware · vCenter Server
Added to catalog
2021-11-03
Required action
Apply updates per vendor instructions.
CISA remediation due date
2021-11-17

CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.

Verify affected versions and patch availability in the vendor advisory before making changes.

Affected products and versions

  • 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:*:*:*:*:*:*

  • cpe:2.3:a:vmware:vcenter_server:7.0:-:*:*:*:*:*:*

  • cpe:2.3:a:vmware:vcenter_server:7.0:a:*:*:*:*:*:*

  • cpe:2.3:a:vmware:vcenter_server:7.0:b:*:*:*:*:*:*

  • cpe:2.3:a:vmware:vcenter_server:7.0:c:*:*:*:*:*:*

  • cpe:2.3:a:vmware:vcenter_server:7.0:d:*:*:*:*:*:*

  • cpe:2.3:a:vmware:vcenter_server:7.0:update1:*:*:*:*:*:*

  • cpe:2.3:a:vmware:vcenter_server:7.0:update1a:*:*:*:*:*:*

  • cpe:2.3:a:vmware:vcenter_server:7.0:update1c:*:*:*:*:*:*

  • cpe:2.3:a:vmware:vcenter_server:7.0:update1d:*:*:*:*:*:*

  • cpe:2.3:a:vmware:vcenter_server:7.0:update2:*:*:*:*:*:*

  • cpe:2.3:a:vmware:vcenter_server:7.0:update2a:*:*:*:*:*:*

  • cpe:2.3:a:vmware:cloud_foundation:*:*:*:*:*:*:*:*

    From (inclusive): 3.0

    Before (exclusive): 3.10.2.1

  • cpe:2.3:a:vmware:cloud_foundation:*:*:*:*:*:*:*:*

    From (inclusive): 4.0

    Before (exclusive): 4.2.1

These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.

Advisories and references

Explore official sources

Read the official NVD record ↗

Explore the CISA catalog ↗

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