CVE-2021-25740 (GCVE-0-2021-25740)
Vulnerability from cvelistv5
Published
2021-09-20 17:05
Modified
2026-06-01 21:45
Severity ?
3.1 (Low) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE
  • CWE-441 - Unintended Proxy or Intermediary
Summary
A security issue was discovered with Kubernetes that could enable users to send network traffic to locations they would otherwise not have access to via a confused deputy attack.
References
Impacted products
Vendor Product Version
Kubernetes Kubernetes Version: 0   ≤
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  "containers": {
    "adp": [
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            "url": "https://security.netapp.com/advisory/ntap-20211014-0001/"
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        "title": "CVE Program Container"
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          "versions": [
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          "lang": "en",
          "value": "Rob Scott"
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        {
          "lang": "en",
          "value": "A security issue was discovered with Kubernetes that could enable users to send network traffic to locations they would otherwise not have access to via a confused deputy attack."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.1,
            "baseSeverity": "LOW",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
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              "description": "CWE-441 Unintended Proxy or Intermediary",
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      "providerMetadata": {
        "dateUpdated": "2026-06-01T21:45:55.645Z",
        "orgId": "a6081bf6-c852-4425-ad4f-a67919267565",
        "shortName": "kubernetes"
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          "url": "https://security.netapp.com/advisory/ntap-20211014-0001/"
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      ],
      "source": {
        "defect": [
          "https://github.com/kubernetes/kubernetes/issues/103675"
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        "discovery": "EXTERNAL"
      },
      "title": "Holes in EndpointSlice Validation Enable Host Network Hijack",
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  "cveMetadata": {
    "assignerOrgId": "a6081bf6-c852-4425-ad4f-a67919267565",
    "assignerShortName": "kubernetes",
    "cveId": "CVE-2021-25740",
    "datePublished": "2021-09-20T17:05:18.065Z",
    "dateReserved": "2021-01-21T00:00:00.000Z",
    "dateUpdated": "2026-06-01T21:45:55.645Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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