CVE-2026-81572

Estado: Pendiente de análisisAlta (7.8)—

In CodeMeter Runtime from version 8.40 to (excluding) 8.41a and 9.00 to (excluding) 9.10, cmu.exe --create-io --file C: creates a predictable temporary file under C:\CM-Stick. The directory and file paths are not properly checked for NTFS reparse points, such as junctions or symbolic links, before file operations are performed. A local attacker can create a junction at the temporary file that points to an arbitrary system path. Because CodeMeter Runtime runs with System privileges, this could allow arbitrary files to be deleted with System privileges and potentially enable local privilege escalation.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 7.8

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.18%
Percentil entre todas las CVEs puntuadas: 7
Fecha de la puntuación: 5/10/2026

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.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation95 %
Impacto principalT1070.004 File Deletionstealth85 %

AV:L, PR:L permite escalada. Creación de junction predecible (CWE-59) bajo control local para eliminar archivos con privilegios System y escalar.

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

Threat Intelligence Program Execution Prevention Application Isolation and Sandboxing Exploit Protection Update Software

Tecnologías afectadas (1)

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

Wibu — Codemeter Runtime^AI

CWE

CWE-59

Referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2026-81572",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-81572",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-08-28T03:55:32.747595Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "2fc02b1f-71e7-4514-a878-169626f68903",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "2fc02b1f-71e7-4514-a878-169626f68903",
      "affectedData": [
        {
          "vendor": "wibu-systems-ag",
          "product": "codemeter-runtime",
          "versions": [
            {
              "status": "affected",
              "version": "8.40",
              "lessThan": "8.41a",
              "versionType": "custom"
            },
            {
              "status": "affected",
              "version": "9.00",
              "lessThan": "9.10",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "Windows"
          ],
          "collectionURL": "https://www.wibu.com/products/codemeter/runtime.html",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-08-27T10:16:39.810",
  "references": [
    {
      "url": "https://cdn.wibu.com/fileadmin/wibu_downloads/security_advisories/AdvisoryWIBU-103081.pdf",
      "source": "2fc02b1f-71e7-4514-a878-169626f68903"
    },
    {
      "url": "https://shelltrail.com/research/local-privilege-escalation-to-system-in-wibu-systems-codemeter-application",
      "source": "2fc02b1f-71e7-4514-a878-169626f68903"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "2fc02b1f-71e7-4514-a878-169626f68903",
      "description": [
        {
          "lang": "en",
          "value": "CWE-59"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "In CodeMeter Runtime from version 8.40 to (excluding) 8.41a and 9.00 to (excluding) 9.10, cmu.exe --create-io --file C: creates a predictable temporary file under C:\\CM-Stick. The directory and\nfile paths are not properly checked for NTFS reparse points, such as junctions or symbolic links, before file\noperations are performed. A local attacker can create a junction at the temporary file that points to an arbitrary\nsystem path. Because CodeMeter Runtime runs with System privileges, this could allow arbitrary files to be deleted\nwith System privileges and potentially enable local privilege escalation."
    }
  ],
  "lastModified": "2026-09-01T20:56:59.203",
  "sourceIdentifier": "2fc02b1f-71e7-4514-a878-169626f68903"
}