CVE-2026-2219

Estado: AnalizadaAlta (7.5)—

It was discovered that dpkg-deb (a component of dpkg, the Debian package management system) does not properly validate the end of the data stream when uncompressing a zstd-compressed .deb archive, which may result in denial of service (infinite loop spinning the CPU).

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Puntuación base: 7.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.43%
Percentil entre todas las CVEs puntuadas: 35
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).

🎯 Técnicas ATT&CK

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

ExplotaciónT1190 Exploit Public-Facing Applicationinitial access85 %
Impacto principalT1499.004 Application or System Exploitationimpact90 %

Vulnerabilidad remota en dpkg-deb (AV:N, PR:N) que causa bucle infinito al procesar archivos .deb comprimidos con zstd, resultando en consumo de CPU y denegación de servicio (DoS).

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

Filter Network Traffic Vulnerability Scanning Privileged Account Management Network Segmentation Limit Access to Resource Over Network Application Isolation and Sandboxing

Tecnologías afectadas (1)

Debian — Dpkg

CWE

CWE-835

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2026-2219",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-2219",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-09T14:52:13.047553Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security@debian.org",
      "affectedData": [
        {
          "vendor": "Debian",
          "product": "dpkg",
          "versions": [
            {
              "status": "affected",
              "version": "1.21.18",
              "lessThan": "1.23.6",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-03-07T09:16:07.823",
  "references": [
    {
      "url": "https://bugs.debian.org/1129722",
      "tags": [
        "Issue Tracking",
        "Mailing List"
      ],
      "source": "security@debian.org"
    },
    {
      "url": "https://git.dpkg.org/cgit/dpkg/dpkg.git/commit/?id=6610297a62c0780dd0e80b0e302ef64fdcc9d313",
      "tags": [
        "Patch"
      ],
      "source": "security@debian.org"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-835"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "It was discovered that dpkg-deb (a component of dpkg, the Debian package management system) does not properly validate the end of the data stream when uncompressing a zstd-compressed .deb archive, which may result in denial of service (infinite loop spinning the CPU)."
    },
    {
      "lang": "es",
      "value": "Se descubrió que dpkg-deb (un componente de dpkg, el sistema de gestión de paquetes de Debian) no valida correctamente el final del flujo de datos al descomprimir un archivo .deb comprimido con zstd, lo que puede resultar en denegación de servicio (bucle infinito que consume la CPU)."
    }
  ],
  "lastModified": "2026-06-17T10:30:34.290",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:debian:dpkg:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A268C989-1F46-4E99-B78A-BE27F95A319E",
              "versionEndExcluding": "1.21.23",
              "versionStartIncluding": "1.21.18"
            },
            {
              "criteria": "cpe:2.3:a:debian:dpkg:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2D775719-5B8C-4CDA-ABAA-1CA570EE3E75",
              "versionEndExcluding": "1.22.22",
              "versionStartIncluding": "1.22.0"
            },
            {
              "criteria": "cpe:2.3:a:debian:dpkg:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B98E9E45-D48E-4B0F-B721-EBB9C862AC4D",
              "versionEndExcluding": "1.23.6",
              "versionStartIncluding": "1.23.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@debian.org"
}