CVE-2025-12838

{
  "id": "CVE-2025-12838",
  "sourceIdentifier": "[email protected]",
  "published": "2025-12-23T22:15:44.277",
  "lastModified": "2026-10-19T22:10:00.130",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "MSP360 Free Backup Link Following Local Privilege Escalation Vulnerability. This vulnerability allows local attackers to escalate privileges on affected installations of MSP360 Free Backup. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. User interaction on the part of an administrator is needed additionally.\n\nThe specific flaw exists within the restore functionality. By creating a junction, an attacker can abuse the service to create arbitrary files. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM. Was ZDI-CAN-27245."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de escalada de privilegios local por seguimiento de enlaces en MSP360 Free Backup. Esta vulnerabilidad permite a atacantes locales realizar una escalada de privilegios en instalaciones afectadas de MSP360 Free Backup. Un atacante debe primero obtener la capacidad de ejecutar código con bajos privilegios en el sistema objetivo para explotar esta vulnerabilidad. Se requiere interacción del usuario por parte de un administrador adicionalmente.\\n\\nEl defecto específico existe dentro de la funcionalidad de restauración. Al crear una junction, un atacante puede abusar del servicio para crear archivos arbitrarios. Un atacante puede aprovechar esta vulnerabilidad para realizar una escalada de privilegios y ejecutar código arbitrario en el contexto de SYSTEM. Fue ZDI-CAN-27245."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "MSP360",
          "product": "Free Backup",
          "defaultStatus": "unknown",
          "versions": [
            {
              "version": "8.1.0.620",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV30": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.0",
          "vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
          "baseScore": 7.3,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.3,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2025-12-24T16:06:17.026368Z",
          "id": "CVE-2025-12838",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-59"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://www.zerodayinitiative.com/advisories/ZDI-25-988/",
      "source": "[email protected]"
    }
  ]
}