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CVE-2026-76061

Estado: RecibidaMedia (5.5)—

A flaw was found in CRI-O's `bind_mount_prefix` handling. When configured with a non-empty `bind_mount_prefix`, a malicious container or local attacker could use a Container Runtime Interface (CRI) hostPath containing an intermediate absolute symlink. This could cause the bind mount source to resolve outside the intended prefixed root, potentially leading to unauthorized access to files or privilege escalation on the host system.

CVSS

Probabilidad de explotación (EPSS)

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.

AV:N, PR:H y acceso a servicios remotos (CRI) sugieren T1210. Escalada de privilegios en el host vía symlink malicioso (impacto primario: T1068). Acceso a ficheros no autorizados (T1005) como secundario.

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 ProgramApplication Isolation and SandboxingExploit ProtectionUpdate SoftwareVulnerability ScanningPrivileged Account Management

Tecnologías afectadas (1)

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

Kubernetes — Cri-oAI

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-76061",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "secalert@redhat.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "LOW",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 3.7,
        "exploitabilityScore": 1.3
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.34.14",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "1.35.0",
              "lessThan": "1.35.9",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "1.36.0",
              "lessThan": "1.36.6",
              "versionType": "semver"
            },
            {
              "status": "affected",
              "version": "1.37.0",
              "lessThan": "1.37.1",
              "versionType": "semver"
            }
          ],
          "packageName": "cri-o",
          "collectionURL": "https://github.com/cri-o/cri-o",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:openshift:4"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4",
          "packageName": "cri-o",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:openshift:4"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4",
          "packageName": "openshift/ose-rhel-coreos-8",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:openshift:4"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4",
          "packageName": "openshift/ose-rhel-coreos-9",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-10-06T20:17:29.123",
  "references": [
    {
      "url": "https://access.redhat.com/security/cve/CVE-2026-76061",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2520330",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://github.com/cri-o/cri-o/commit/01f90366dc8c8db0df32b4aae7fd067c1eddbb70",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://github.com/cri-o/cri-o/commit/6d08a9a60ecfabdb3cbea0c8d698e31f1f01cb40",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://github.com/cri-o/cri-o/commit/d6f58973acfcae93ecc039e0297fbe5f2548b46b",
      "source": "secalert@redhat.com"
    }
  ],
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "secalert@redhat.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-59"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in CRI-O's `bind_mount_prefix` handling. When configured with a non-empty `bind_mount_prefix`, a malicious container or local attacker could use a Container Runtime Interface (CRI) hostPath containing an intermediate absolute symlink. This could cause the bind mount source to resolve outside the intended prefixed root, potentially leading to unauthorized access to files or privilege escalation on the host system."
    }
  ],
  "lastModified": "2026-10-06T20:17:29.123",
  "sourceIdentifier": "secalert@redhat.com"
}