KEV Entry

CVE-2021-21985

Known Exploited Vulnerability Entry External Catalog

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Entry Details
Confirmed Exploited

CVE-2021-21985

2021-11-03 00:00 UTC

Timestamps

2021-11-03

2021-11-03

Scope

KEVIntel entry: The vSphere Client (HTML5) contains a remote code execution vulnerability due to lack of input validation in the Virtual SAN Health Check plug-in... | Affected: VMware / VMware vCenter Server and VMware Cloud Foundation | CVSS: 9.8 (CRITICAL) | EPSS: 0.99999 | Used in malware: yes | Not yet in CISA KEV: False

References
  • {'id': 'CVE-2021-21985', 'url': 'https://www.cve.org/CVERecord?id=CVE-2021-21985'}
  • {'id': 'kevintel', 'url': 'https://kevintel.com/vuln/CVE-2021-21985'}

055c0f9e-e56a-4740-90bf-e8ea5ee14938

caeb2787-0d58-4236-9039-7c86c3e566f3

2026-06-23 11:13 UTC

2026-06-23 11:13 UTC

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
public_report kevintel confirmed_compromise 0.70
View details 
{
  "added_date": "2021-11-03T00:00:00.000Z",
  "ahead_of_cisa_kev": null,
  "cvss_score": 9.8,
  "cvss_severity": "CRITICAL",
  "epss_percentile": 0.99992,
  "epss_score": 0.99999,
  "feed": "KEVIntel (kevintel.com)",
  "not_yet_in_cisa_kev": false,
  "product": "VMware vCenter Server and VMware Cloud Foundation",
  "title": "The vSphere Client (HTML5) contains a remote code execution vulnerability due to lack of input validation in the Virtual SAN Health Check plug-in...",
  "used_in_malware": "yes",
  "vendor": "VMware"
}
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