Vulnerability-Lookup

FKIE_CVE-2021-22928

Vulnerability from fkie_nvd - Published: 2021-08-05 21:15 - Updated: 2026-06-17 03:38

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

A vulnerability has been identified in Citrix Virtual Apps and Desktops that could, if exploited, allow a user of a Windows VDA that has either Citrix Profile Management or Citrix Profile Management WMI Plugin installed to escalate their privilege level on that Windows VDA to SYSTEM.

References

	URL	Tags
	support@hackerone.com	https://support.citrix.com/article/CTX319750	Patch, Vendor Advisory
	af854a3a-2127-422b-91ae-364da2661108	https://support.citrix.com/article/CTX319750	Patch, Vendor Advisory

Impacted products

Vendor	Product	Version
citrix	virtual_apps_and_desktops	*
citrix	virtual_apps_and_desktops	1912
citrix	virtual_apps_and_desktops	1912
citrix	xenapp	7.15
citrix	xenapp	7.15
citrix	xenapp	7.15
citrix	xendesktop	7.15
citrix	xendesktop	7.15
citrix	xendesktop	7.15

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Citrix Virtual Apps and Desktops",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "2106 HF1, 1912LTSR CU3 HF1, 7.15LTSR CU7 HF1"
            }
          ]
        }
      ],
      "source": "support@hackerone.com"
    }
  ],
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              "versionEndIncluding": "2106",
              "versionStartIncluding": "2006",
              "vulnerable": true
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              "vulnerable": true
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability has been identified in Citrix Virtual Apps and Desktops that could, if exploited, allow a user of a Windows VDA that has either Citrix Profile Management or Citrix Profile Management WMI Plugin installed to escalate their privilege level on that Windows VDA to SYSTEM."
    },
    {
      "lang": "es",
      "value": "Se ha identificado una vulnerabilidad en Citrix Virtual Apps and Desktops que podr\u00eda, si es explotado, permitir a un usuario de un VDA de Windows que tenga instalado Citrix Profile Management o Citrix Profile Management WMI Plugin escalar su nivel de privilegios en ese VDA de Windows a SYSTEM"
    }
  ],
  "id": "CVE-2021-22928",
  "lastModified": "2026-06-17T03:38:02.947",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 7.2,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 10.0,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
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        "impactScore": 5.9,
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        "type": "Primary"
      }
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  },
  "published": "2021-08-05T21:15:11.733",
  "references": [
    {
      "source": "support@hackerone.com",
      "tags": [
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      "url": "https://support.citrix.com/article/CTX319750"
    },
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    }
  ],
  "sourceIdentifier": "support@hackerone.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2021-22928 (GCVE-0-2021-22928)

Vulnerability from cvelistv5 – Published: 2021-08-05 20:16 – Updated: 2024-08-03 18:58

Summary

Severity

No CVSS data available.

CWE

Privilege Escalation (CAPEC-233)

Assigner

hackerone CNA under the mitre root

CNA scorecard D 59/100 over 195 records in the last 180 days details

References

1 reference

URL	Tags
https://support.citrix.com/article/CTX319750	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	Citrix Virtual Apps and Desktops	Affected: 2106 HF1, 1912LTSR CU3 HF1, 7.15LTSR CU7 HF1

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2024-08-03T18:58:26.162Z",
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            ],
            "url": "https://support.citrix.com/article/CTX319750"
          }
        ],
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      }
    ],
    "cna": {
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      ],
      "problemTypes": [
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            {
              "description": "Privilege Escalation (CAPEC-233)",
              "lang": "en",
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                      "version": {
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}

Sightings

Author	Source	Type	Date	Other

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.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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