FKIE_CVE-2026-0773

Vulnerability from fkie_nvd - Published: 2026-01-23 04:16 - Updated: 2026-04-15 00:35
Severity ?
9.8 (Critical) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Upsonic Cloudpickle Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Upsonic. Authentication is not required to exploit this vulnerability. The specific flaw exists within the add_tool endpoint, which listens on TCP port 7541 by default. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-26845.
References
zdi-disclosures@trendmicro.comhttps://www.zerodayinitiative.com/advisories/ZDI-26-042/
Impacted products
Vendor Product Version
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Upsonic Cloudpickle Deserialization of Untrusted Data Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Upsonic. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the add_tool endpoint, which listens on TCP port 7541 by default. The issue results from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-26845."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de Ejecuci\u00f3n Remota de C\u00f3digo por Deserializaci\u00f3n de Datos No Confiables en Upsonic Cloudpickle. Esta vulnerabilidad permite a atacantes remotos ejecutar c\u00f3digo arbitrario en instalaciones afectadas de Upsonic. La autenticaci\u00f3n no es requerida para explotar esta vulnerabilidad.\n\nLa falla espec\u00edfica existe dentro del endpoint add_tool, que escucha en el puerto TCP 7541 por defecto. El problema resulta de la falta de validaci\u00f3n adecuada de los datos proporcionados por el usuario, lo que puede resultar en la deserializaci\u00f3n de datos no confiables. Un atacante puede aprovechar esta vulnerabilidad para ejecutar c\u00f3digo en el contexto de la cuenta de servicio. Fue ZDI-CAN-26845."
    }
  ],
  "id": "CVE-2026-0773",
  "lastModified": "2026-04-15T00:35:42.020",
  "metrics": {
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "zdi-disclosures@trendmicro.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-01-23T04:16:04.493",
  "references": [
    {
      "source": "zdi-disclosures@trendmicro.com",
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-26-042/"
    }
  ],
  "sourceIdentifier": "zdi-disclosures@trendmicro.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-502"
        }
      ],
      "source": "zdi-disclosures@trendmicro.com",
      "type": "Primary"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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