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CVE-2026-6068

Estado: AnalizadaCrítica (9.6)—

NASM contains a heap use after free vulnerability in response file (-@) processing where a dangling pointer to freed memory is stored in the global depend_file and later dereferenced, as the response-file buffer is freed before the pointer is used, allowing for data corruption or remote code execution.

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).

🎯 Técnicas ATT&CK

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

UI:R y acceso remoto indican ejecución en cliente (T1203). El UAF permite ejecución de código arbitrario (T1059) o corrupción de datos (T1565.001) mediante respuesta preparada en -@.

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

Restrict Web-Based ContentRestrict File and Directory PermissionsPrivileged Account ManagementRemote Data StorageLimit Software InstallationExecution Prevention

Tecnologías afectadas (1)

Nasm — Netwide Assembler

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-6068",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-6068",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-04-10T14:56:02.839621Z"
        }
      }
    ],
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          "attackVector": "NETWORK",
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
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        },
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  },
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      "source": "cret@cert.org",
      "affectedData": [
        {
          "vendor": "NASM",
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          "versions": [
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            }
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  ],
  "published": "2026-04-10T14:16:38.723",
  "references": [
    {
      "url": "https://github.com/netwide-assembler/nasm/issues/222",
      "tags": [
        "Exploit",
        "Issue Tracking"
      ],
      "source": "cret@cert.org"
    },
    {
      "url": "https://sekai.team/blog/nasm-cve-disclosure/cve-2026-6068",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "cret@cert.org"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "NASM contains a heap use after free vulnerability in response file (-@) processing where a dangling pointer to freed memory is stored in the global depend_file and later dereferenced, as the response-file buffer is freed before the pointer is used, allowing for data corruption or remote code execution."
    }
  ],
  "lastModified": "2026-06-17T11:00:15.753",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:nasm:netwide_assembler:3.02:rc5:*:*:*:*:*:*",
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            }
          ],
          "operator": "OR"
        }
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  "sourceIdentifier": "cret@cert.org"
}