CVE-2021-21985

Published May 26, 2021 CVSS 3.1 · 9.8 Critical EPSS 100.0% KEV · Listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics kev

{'dateAdded': '2021-11-03'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'active', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-470
CWE-918
Weaknesses

Sources

Status
PUBLISHED
Assigner
vmware
Published
Updated
Aug 12, 2026, 3:55 AM
Reserved
Jan 4, 2021, 12:00 AM
Status
Analyzed
Published
May 26, 2021, 3:15 PM
Modified
Aug 12, 2026, 5:17 AM