CVE-2026-58302

Estado: AplazadaAlta (8.4)—

rtapi_app in linuxcnc-uspace in LinuxCNC before 2.9.9 allows privilege escalation. It is installed SUID root and loads shared library modules via dlopen() by using a user-supplied module name. Insufficient validation of the module name allows path traversal, enabling an unprivileged local user to load an arbitrary shared library. Because the process retains elevated privileges during module loading, this results in local privilege escalation to root.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Puntuación base: 8.4

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.19%
Percentil entre todas las CVEs puntuadas: 8
Fecha de la puntuación: 6/10/2026

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 principalT1548.004 Elevated Execution with Promptprivilege escalation90 %

Vulnerabilidad de escalada de privilegios local (AV:L, PR:N, UI:N): path traversal en dlopen() permite a usuario sin privilegios cargar biblioteca arbitraria en proceso SUID root, logrando ejecución de código con privilegios elevados.

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

Execution Prevention Threat Intelligence Program 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.

Linuxcnc — Linuxcnc-uspace^AI

CWE

CWE-22

Referencias

JSON original (NVD)

Mostrar

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  "id": "CVE-2026-58302",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-58302",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-06-30T13:04:30.950885Z"
        }
      }
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    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "cve@mitre.org",
        "cvssData": {
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          "version": "3.1",
          "baseScore": 8.4,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/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": 2.5
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "LinuxCNC",
          "product": "LinuxCNC",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "2.9.9",
              "versionType": "semver"
            }
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          "defaultStatus": "unaffected"
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  ],
  "published": "2026-06-30T02:16:26.820",
  "references": [
    {
      "url": "https://bugs.debian.org/1140943",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/LinuxCNC/linuxcnc/commit/00d534c87464a3ed446656998aa02b8abc74b391",
      "source": "cve@mitre.org"
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    {
      "url": "https://github.com/LinuxCNC/linuxcnc/commit/ea7cd579d39b586952a42e3da9a26d3e36e7a272",
      "source": "cve@mitre.org"
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      "url": "https://github.com/LinuxCNC/linuxcnc/compare/v2.9.8...v2.9.9",
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  "vulnStatus": "Deferred",
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      "description": [
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  "descriptions": [
    {
      "lang": "en",
      "value": "rtapi_app in linuxcnc-uspace in LinuxCNC before 2.9.9 allows privilege escalation. It is installed SUID root and loads shared library modules via dlopen() by using a user-supplied module name. Insufficient validation of the module name allows path traversal, enabling an unprivileged local user to load an arbitrary shared library. Because the process retains elevated privileges during module loading, this results in local privilege escalation to root."
    }
  ],
  "lastModified": "2026-06-30T14:22:10.020",
  "sourceIdentifier": "cve@mitre.org"
}