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CVE-2025-63680

Full vulnerability record from the local CVENow database.

Description

Nero BackItUp in the Nero Productline is vulnerable to a path parsing/UI rendering flaw (CWE-22) that, in combination with Windows ShellExecuteW fallback extension resolution, leads to arbitrary code execution when a user clicks a crafted entry. By creating a trailing-dot folder and placing a same-basename script, Nero BackItUp renders the file as a folder icon and then invokes ShellExecuteW, which executes the script via PATHEXT fallback (.COM/.EXE/.BAT/.CMD). The issue affects recent Nero BackItUp product lines (2019-2025 and earlier) and has been acknowledged by the vendor.

Severity
HIGH
CVSS score
8.6 (v3.1)
Vulnerability status
Analyzed
Source identifier
Published
2025-11-14 19:16:01.360000
Last modified
2026-11-05 14:10:00.273000
View original CVE JSON
{
  "id": "CVE-2025-63680",
  "sourceIdentifier": "[email protected]",
  "published": "2025-11-14T19:16:01.360",
  "lastModified": "2026-11-05T14:10:00.273",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Nero BackItUp in the Nero Productline is vulnerable to a path parsing/UI rendering flaw (CWE-22) that, in combination with Windows ShellExecuteW fallback extension resolution, leads to arbitrary code execution when a user clicks a crafted entry. By creating a trailing-dot folder and placing a same-basename script, Nero BackItUp renders the file as a folder icon and then invokes ShellExecuteW, which executes the script via PATHEXT fallback (.COM/.EXE/.BAT/.CMD). The issue affects recent Nero BackItUp product lines (2019-2025 and earlier) and has been acknowledged by the vendor."
    },
    {
      "lang": "es",
      "value": "Nero BackItUp en la línea de productos Nero es vulnerable a un fallo de análisis de ruta/renderizado de interfaz de usuario (CWE-22) que, en combinación con la resolución de extensión de reserva de Windows ShellExecuteW, conduce a la ejecución de código arbitrario cuando un usuario hace clic en una entrada diseñada. Al crear una carpeta con un punto final y colocar un script con el mismo nombre base, Nero BackItUp renderiza el archivo como un icono de carpeta y luego invoca ShellExecuteW, que ejecuta el script a través de la reserva PATHEXT (.COM/.EXE/.BAT/.CMD). El problema afecta a las líneas de productos recientes de Nero BackItUp (2019-2025 y anteriores) y ha sido reconocido por el proveedor."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "version": "n/a",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
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        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H",
          "baseScore": 8.6,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 6.0
      }
    ],
    "ssvcV203": [
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2025-11-14T19:20:09.294064Z",
          "id": "CVE-2025-63680",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-22"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:nero:backitup:*:*:*:*:*:*:*:*",
              "versionEndIncluding": "2025",
              "matchCriteriaId": "C0417A0B-91DC-49AE-B1D5-0280F523AC70"
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  ],
  "references": [
    {
      "url": "https://github.com/PotatoHamm/Nero-Productline-Vulnerability",
      "source": "[email protected]",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ]
    }
  ]
}