CVE-2015-3456

Estado: ModificadaAlta (7.7)—
The Floppy Disk Controller (FDC) in QEMU, as used in Xen 4.5.x and earlier and KVM, allows local guest users to cause a denial of service (out-of-bounds write and guest crash) or possibly execute arbitrary code via the (1) FD_CMD_READ_ID, (2) FD_CMD_DRIVE_SPECIFICATION_COMMAND, or other unspecified commands, aka VENOM.
CVSS

Versión: 2.0
Vector: AV:A/AC:L/Au:S/C:C/I:C/A:C
Puntuación base: 7.7
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 15%
Percentil entre todas las CVEs puntuadas: 97
Fecha de la puntuación: 6/10/2026
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).
Tecnologías afectadas (5)

Qemu — Qemu Redhat — Enterprise Linux Redhat — Enterprise Virtualization Redhat — Openstack XEN — XEN
CWE

CWE-119
Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2015-3456",
  "cveTags": [],
  "metrics": {
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        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.7,
          "accessVector": "ADJACENT_NETWORK",
          "vectorString": "AV:A/AC:L/Au:S/C:C/I:C/A:C",
          "authentication": "SINGLE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 5.1,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2015-05-13T18:59:00.157",
  "references": [
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      "url": "http://www.debian.org/security/2015/dsa-3262",
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    {
      "url": "http://www.debian.org/security/2015/dsa-3274",
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      "url": "http://www.securitytracker.com/id/1032306",
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      "url": "http://www.securitytracker.com/id/1032311",
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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    {
      "url": "http://www.fortiguard.com/advisory/2015-05-19-cve-2015-3456-venom-vulnerability",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "url": "https://access.redhat.com/articles/1444903",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "url": "https://bto.bluecoat.com/security-advisory/sa95",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "url": "https://kb.juniper.net/JSA10783",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "url": "https://kc.mcafee.com/corporate/index?page=content&id=SB10118",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "url": "https://security.gentoo.org/glsa/201602-01",
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      "url": "https://security.gentoo.org/glsa/201604-03",
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      "url": "https://www.exploit-db.com/exploits/37053/",
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    {
      "url": "https://www.suse.com/security/cve/CVE-2015-3456.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-119"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Floppy Disk Controller (FDC) in QEMU, as used in Xen 4.5.x and earlier and KVM, allows local guest users to cause a denial of service (out-of-bounds write and guest crash) or possibly execute arbitrary code via the (1) FD_CMD_READ_ID, (2) FD_CMD_DRIVE_SPECIFICATION_COMMAND, or other unspecified commands, aka VENOM."
    },
    {
      "lang": "es",
      "value": "Floppy Disk Controller (FDC) en QEMU, utilizado en Xen 4.5.x y anteriores y KVM, permite a usuarios locales invitados causar una denegación de servicio (escritura fuera de rango y caída del invitado) o posiblemente ejecutar código arbitrario a través de (1) FD_CMD_READ_ID, (2) FD_CMD_DRIVE_SPECIFICATION_COMMAND, u otros comandos sin especificar, también conocido como VENOM."
    }
  ],
  "lastModified": "2026-06-17T00:25:57.477",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "ABF17A18-4BE8-41B7-B50C-F4A137B3B2F1",
              "versionEndIncluding": "2.3.0"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
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          "negate": false,
          "cpeMatch": [
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            },
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              "vulnerable": true,
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              "vulnerable": true,
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              "matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A"
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              "vulnerable": true,
              "matchCriteriaId": "90CCECD0-C0F9-45A8-8699-64428637EBCA"
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          ],
          "operator": "OR"
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      ]
    }
  ],
  "evaluatorComment": "Though the VENOM vulnerability is also agnostic of the guest operating system, an attacker (or an attacker’s malware) would need to have administrative or root privileges in the guest operating system in order to exploit VENOM",
  "sourceIdentifier": "cve@mitre.org"
}