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CVE-2021-39986

Estado: ModificadaMedia (5.5)—

Se presenta una vulnerabilidad de escritura excesiva no autorizada en el módulo de administración de acceso a la memoria de la ACPU. Una explotación con éxito de esta vulnerabilidad puede afectar la confidencialidad del servicio

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)

Huawei — Emui

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2021-39986",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 2.1,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@huawei.com",
      "affectedData": [
        {
          "vendor": "Huawei",
          "product": "EMUI",
          "versions": [
            {
              "status": "affected",
              "version": "12.0.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2022-02-09T23:15:16.087",
  "references": [
    {
      "url": "https://consumer.huawei.com/en/support/bulletin/2022/2/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@huawei.com"
    },
    {
      "url": "https://consumer.huawei.com/en/support/bulletin/2022/2/",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "There is an unauthorized rewriting vulnerability with the memory access management module on ACPU.Successful exploitation of this vulnerability may affect service confidentiality."
    },
    {
      "lang": "es",
      "value": "Se presenta una vulnerabilidad de escritura excesiva no autorizada en el módulo de administración de acceso a la memoria de la ACPU. Una explotación con éxito de esta vulnerabilidad puede afectar la confidencialidad del servicio"
    }
  ],
  "lastModified": "2026-06-17T04:04:31.103",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:huawei:emui:12.0.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A974CA73-84E8-480B-BB4C-4A81D0C985B2"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@huawei.com"
}