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CVE-2020-35514

Status: ModifiedHigh (7)—

An insecure modification flaw in the /etc/kubernetes/kubeconfig file was found in OpenShift. This flaw allows an attacker with access to a running container which mounts /etc/kubernetes or has local access to the node, to copy this kubeconfig file and attempt to add their own node to the OpenShift cluster. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. This flaw affects versions before openshift4/ose-machine-config-operator v4.7.0-202105111858.p0.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

Redhat — Openshift

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2020-35514",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.4,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.4,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
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    "cvssMetricV31": [
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        "cvssData": {
          "scope": "UNCHANGED",
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          "attackVector": "LOCAL",
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          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
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        "exploitabilityScore": 1
      }
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  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "openshift/machine-config-operator",
          "versions": [
            {
              "status": "affected",
              "version": "Unspecified"
            }
          ]
        }
      ]
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  ],
  "published": "2021-06-02T14:15:09.577",
  "references": [
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1914714",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1914714",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secalert@redhat.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-266"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An insecure modification flaw in the /etc/kubernetes/kubeconfig file was found in OpenShift. This flaw allows an attacker with access to a running container which mounts /etc/kubernetes or has local access to the node, to copy this kubeconfig file and attempt to add their own node to the OpenShift cluster. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. This flaw affects versions before openshift4/ose-machine-config-operator v4.7.0-202105111858.p0."
    },
    {
      "lang": "es",
      "value": "Se ha detectado un fallo de modificación no segura en el archivo /etc/kubernetes/kubeconfig en OpenShift. Este fallo permite a un atacante con acceso a un contenedor en ejecución que monta el archivo /etc/kubernetes o que tiene acceso local al nodo, copiar este archivo kubeconfig e intentar añadir su propio nodo al clúster de OpenShift. La mayor amenaza de esta vulnerabilidad es la confidencialidad, la integridad, así como la disponibilidad del sistema. Este fallo afecta a versiones anteriores a openshift4/ose-machine-config-operator v4.7.0-202105111858.p0"
    }
  ],
  "lastModified": "2026-06-17T03:13:50.913",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:redhat:openshift:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "AC917AC2-DD18-4DD6-80B4-4A1BE1A62D10",
              "versionEndExcluding": "4.7.0"
            },
            {
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              "vulnerable": true,
              "matchCriteriaId": "5D5A79FB-491F-4030-8F6F-C3691F9D7D58"
            }
          ],
          "operator": "OR"
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  "sourceIdentifier": "secalert@redhat.com"
}