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CVE-2020-15863

Estado: ModificadaMedia (5.3)—

hw/net/xgmac.c in the XGMAC Ethernet controller in QEMU before 07-20-2020 has a buffer overflow. This occurs during packet transmission and affects the highbank and midway emulated machines. A guest user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service or potential privileged code execution. This was fixed in commit 5519724a13664b43e225ca05351c60b4468e4555.

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 (3)

Canonical — Ubuntu LinuxDebian — Debian LinuxQemu — Qemu

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2020-15863",
  "cveTags": [],
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          "accessVector": "LOCAL",
          "vectorString": "AV:L/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": 3.4,
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          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L",
          "integrityImpact": "LOW",
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "description": [
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          "value": "CWE-787"
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      "lang": "en",
      "value": "hw/net/xgmac.c in the XGMAC Ethernet controller in QEMU before 07-20-2020 has a buffer overflow. This occurs during packet transmission and affects the highbank and midway emulated machines. A guest user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service or potential privileged code execution. This was fixed in commit 5519724a13664b43e225ca05351c60b4468e4555."
    },
    {
      "lang": "es",
      "value": "El archivo hw/net/xgmac.c en el controlador Ethernet XGMAC en QEMU antes del 20/07/2020, presenta un desbordamiento de búfer. Esto ocurre durante la transmisión de paquetes y afecta a las máquinas emuladas highbank y midway. Un usuario o proceso invitado podría usar este fallo para bloquear el proceso QEMU en el host, resultando en una denegación de servicio o una posible ejecución de código privilegiado. Esto se corrigió en commit 5519724a13664b43e225ca05351c60b4468e4555"
    }
  ],
  "lastModified": "2026-06-17T02:57:18.877",
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}