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CVE-2025-50460

Estado: AplazadaCrítica (9.8)—

A remote code execution (RCE) vulnerability exists in the ms-swift project version 3.3.0 due to unsafe deserialization in tests/run.py using yaml.load() from the PyYAML library (versions = 5.3.1). If an attacker can control the content of the YAML configuration file passed to the --run_config parameter, arbitrary code can be executed during deserialization. This can lead to full system compromise. The vulnerability is triggered when a malicious YAML file is loaded, allowing the execution of arbitrary Python commands such as os.system(). It is recommended to upgrade PyYAML to version 5.4 or higher, and to use yaml.safe_load() to mitigate the issue.

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.

Vulnerabilidad de deserialización insegura (CWE-502) en aplicación remota expuesta; acceso red sin privilegios (AV:N/PR:N). Permite ejecución arbitraria de código Python vía yaml.load().

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

Privileged Account ManagementVulnerability ScanningRestrict Web-Based ContentNetwork SegmentationLimit Software InstallationLimit Access to Resource Over Network

Tecnologías afectadas (2)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Ms-swift — Ms-swiftAIPyyaml — PyyamlAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2025-50460",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-50460",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-08-01T17:22:25.650282Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2025-08-01T16:15:41.600",
  "references": [
    {
      "url": "https://github.com/Anchor0221/CVE-2025-50460",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/advisories/GHSA-6757-jp84-gxfx",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/modelscope/ms-swift",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/modelscope/ms-swift/blob/main/tests/run.py#L420",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/Anchor0221/CVE-2025-50460",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A remote code execution (RCE) vulnerability exists in the ms-swift project version 3.3.0 due to unsafe deserialization in tests/run.py using yaml.load() from the PyYAML library (versions = 5.3.1). If an attacker can control the content of the YAML configuration file passed to the --run_config parameter, arbitrary code can be executed during deserialization. This can lead to full system compromise. The vulnerability is triggered when a malicious YAML file is loaded, allowing the execution of arbitrary Python commands such as os.system(). It is recommended to upgrade PyYAML to version 5.4 or higher, and to use yaml.safe_load() to mitigate the issue."
    },
    {
      "lang": "es",
      "value": "Existe una vulnerabilidad de ejecución remota de código (RCE) en el proyecto ms-swift versión 3.3.0 debido a una deserialización insegura en tests/run.py mediante yaml.load() de la librería PyYAML (versiones = 5.3.1). Si un atacante controla el contenido del archivo de configuración YAML transferido al parámetro --run_config, se puede ejecutar código arbitrario durante la deserialización. Esto puede comprometer completamente el sistema. La vulnerabilidad se activa al cargar un archivo YAML malicioso, lo que permite la ejecución de comandos Python arbitrarios como os.system(). Se recomienda actualizar PyYAML a la versión 5.4 o superior y usar yaml.safe_load() para mitigar el problema."
    }
  ],
  "lastModified": "2026-06-17T09:35:04.847",
  "sourceIdentifier": "cve@mitre.org"
}