CVE-2026-49314

Estado: AplazadaAlta (7.3)—

OOB write vulnerability in the rendering and composition module. Impact: Successful exploitation of this vulnerability may affect availability.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Puntuación base: 7.3

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.12%
Percentil entre todas las CVEs puntuadas: 2
Fecha de la puntuación: 5/10/2026

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation85 %
Impacto principalT1059 Command and Scripting Interpreterexecution60 %
Impacto secundarioT1499.004 Application or System Exploitationimpact70 %

AV:L sin UI:N indica escalada local (T1068). CWE-125 (OOB read/write) en módulo de renderizado permite ejecución de código (T1059) y negación de servicio (T1499.004) según el impacto declarado.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Execution Prevention Threat Intelligence Program Restrict Web-Based Content Privileged Account Management Limit Software Installation Filter Network Traffic

CWE

CWE-125

Referencias

JSON original (NVD)

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  "id": "CVE-2026-49314",
  "cveTags": [],
  "metrics": {
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      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-49314",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-09T15:56:03.970363Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "psirt@huawei.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.3,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 4.7,
        "exploitabilityScore": 2.5
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@huawei.com",
      "affectedData": [
        {
          "vendor": "Huawei",
          "product": "HarmonyOS",
          "versions": [
            {
              "status": "affected",
              "version": "6.1.0"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-09-09T04:17:59.783",
  "references": [
    {
      "url": "https://consumer.huawei.com/en/support/bulletin/2026/9/",
      "source": "psirt@huawei.com"
    },
    {
      "url": "https://consumer.huawei.com/en/support/bulletinlaptops/2026/9/",
      "source": "psirt@huawei.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
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      "description": [
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        }
      ]
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  ],
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    {
      "lang": "en",
      "value": "OOB write vulnerability in the rendering and composition module.\nImpact: Successful exploitation of this vulnerability may affect availability."
    }
  ],
  "lastModified": "2026-09-09T21:17:02.710",
  "sourceIdentifier": "psirt@huawei.com"
}