CVE-2026-21840

{
  "id": "CVE-2026-21840",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-14T22:16:52.527",
  "lastModified": "2026-10-24T21:10:00.130",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "HCL BigFix Platform is affected by a user enumeration vulnerability which might allow an attacker, through careful system control and response time monitoring, to perform some level of user enumeration for the BigFix service."
    },
    {
      "lang": "es",
      "value": "HCL BigFix Platform está afectado por una vulnerabilidad de enumeración de usuarios que podría permitir a un atacante, mediante un control cuidadoso del sistema y la monitorización del tiempo de respuesta, realizar algún nivel de enumeración de usuarios para el servicio BigFix."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "HCLSoftware",
          "product": "HCL BigFix Platform",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "10.0.0 - 10.0.15, 11.0.0 - 11.0.5",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N",
          "baseScore": 3.1,
          "baseSeverity": "LOW",
          "attackVector": "NETWORK",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 1.6,
        "impactScore": 1.4
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-15T12:45:19.795768Z",
          "id": "CVE-2026-21840",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-208"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://support.hcl-software.com/csm?id=kb_article&sysparm_article=KB0132093",
      "source": "[email protected]"
    }
  ]
}