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CVE-2021-21953

Estado: ModificadaAlta (8.1)—

An authentication bypass vulnerability exists in the process_msg() function of the home_security binary of Anker Eufy Homebase 2 2.1.6.9h. A specially-crafted man-in-the-middle attack can lead to increased privileges.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Anker — Eufy Homebase 2 Firmware

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-21953",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Secondary",
        "source": "talos-cna@cisco.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 7.7,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:H",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.5,
        "exploitabilityScore": 2.2
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 8.1,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 2.2
      }
    ]
  },
  "affected": [
    {
      "source": "talos-cna@cisco.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "Anker",
          "versions": [
            {
              "status": "affected",
              "version": "Anker Eufy Homebase 2 2.1.6.9h"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-12-22T19:15:11.110",
  "references": [
    {
      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1380",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "talos-cna@cisco.com"
    },
    {
      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2021-1380",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "talos-cna@cisco.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-300"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An authentication bypass vulnerability exists in the process_msg() function of the home_security binary of Anker Eufy Homebase 2 2.1.6.9h. A specially-crafted man-in-the-middle attack can lead to increased privileges."
    },
    {
      "lang": "es",
      "value": "Se presenta una vulnerabilidad de omisión de autenticación en la función process_msg() del binario home_security de Anker Eufy Homebase versión 2 2.1.6.9h. Un ataque de tipo man-in-the-middle especialmente diseñado puede conllevar a un aumento de privilegios"
    }
  ],
  "lastModified": "2026-06-17T03:36:25.373",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:o:anker:eufy_homebase_2_firmware:2.1.6.9h:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0724364A-312F-4040-A21D-1B88696C89D8"
            }
          ],
          "operator": "OR"
        },
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      "operator": "AND"
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  ],
  "sourceIdentifier": "talos-cna@cisco.com"
}