CVE-2021-21972 (GCVE-0-2021-21972)

Vulnerability from cvelistv5 – Published: 2021-02-24 16:42 – Updated: 2025-10-21 23:25
VLAI? CISA
Summary
The vSphere Client (HTML5) contains a remote code execution vulnerability in a vCenter Server plugin. 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. This affects VMware vCenter Server (7.x before 7.0 U1c, 6.7 before 6.7 U3l and 6.5 before 6.5 U3n) and VMware Cloud Foundation (4.x before 4.2 and 3.x before 3.10.1.2).
Severity ?
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
  • Remote code execution vulnerability
Assigner
References
Impacted products
Vendor Product Version
n/a VMware vCenter Server Affected: 7.x before 7.0 U1c
Affected: 6.7 before 6.7 U3l
Affected: 6.5 before 6.5 U3n
    n/a VMware Cloud Foundation Affected: 4.x before 4.2
Affected: 3.x before 3.10.1.2
CISA Known Exploited Vulnerability
Data from the CISA Known Exploited Vulnerabilities Catalog

Date added: 2021-11-03

Due date: 2021-11-17

Required action: Apply updates per vendor instructions.

Used in ransomware: Known

Notes: https://nvd.nist.gov/vuln/detail/CVE-2021-21972

Show details on NVD website
To clipboard 

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      "cveMetadata": "{\"assignerOrgId\": \"dcf2e128-44bd-42ed-91e8-88f912c1401d\", \"assignerShortName\": \"vmware\", \"cveId\": \"CVE-2021-21972\", \"datePublished\": \"2021-02-24T16:42:05.000Z\", \"dateReserved\": \"2021-01-04T00:00:00.000Z\", \"dateUpdated\": \"2025-10-21T23:25:54.005Z\", \"state\": \"PUBLISHED\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.