{
  "document": {
    "aggregate_severity": {
      "text": "Medium"
    },
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "TuxCare License Agreement",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
        "title": "Terms of Use"
      }
    ],
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      "contact_details": "https://tuxcare.com/contact/",
      "name": "TuxCare",
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        "summary": "Canonical URL",
        "url": "https://security.tuxcare.com/csaf/v2/els_os/centos-stream8els/vex/2021/cve-2021-0127-els_os-centos-stream8els.json"
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      "generator": {
        "date": "2026-06-06T01:40:13Z",
        "engine": {
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      "id": "CVE-2021-0127-ELS_OS-CENTOS-STREAM8ELS",
      "initial_release_date": "2021-01-01T00:00:00Z",
      "revision_history": [
        {
          "date": "2021-01-01T00:00:00Z",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2026-06-04T20:39:29Z",
          "number": "2",
          "summary": "Official Publication"
        },
        {
          "date": "2026-06-06T01:40:13Z",
          "number": "3",
          "summary": "Update document"
        }
      ],
      "status": "final",
      "version": "3"
    },
    "title": "Security update on CVE-2021-0127"
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  "vulnerabilities": [
    {
      "cve": "CVE-2021-0127",
      "notes": [
        {
          "category": "description",
          "text": "Insufficient control flow management in some Intel(R) Processors may allow an authenticated user to potentially enable a denial of service via local access.",
          "title": "Vulnerability description"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
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          "CentOS-Stream-8:microcode_ctl-4:20240910-2.el8.x86_64",
          "CentOS-Stream-8:microcode_ctl-4:20250211-2.el8.tuxcare.els1.x86_64",
          "CentOS-Stream-8:microcode_ctl-4:20250211-2.el8.x86_64",
          "CentOS-Stream-8:microcode_ctl-4:20250512-2.el8.tuxcare.els1.x86_64",
          "CentOS-Stream-8:microcode_ctl-4:20250512-2.el8.x86_64",
          "CentOS-Stream-8:microcode_ctl-4:20251111-2.el8.tuxcare.els1.x86_64",
          "CentOS-Stream-8:microcode_ctl-4:20251111-2.el8.x86_64"
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      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://cve.tuxcare.com/els/cve/CVE-2021-0127"
        },
        {
          "category": "external",
          "summary": "https://security.netapp.com/advisory/ntap-20220210-0008/",
          "url": "https://security.netapp.com/advisory/ntap-20220210-0008/"
        },
        {
          "category": "external",
          "summary": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00532.html",
          "url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00532.html"
        }
      ],
      "release_date": "2022-02-09T23:15:00Z",
      "remediations": [
        {
          "category": "no_fix_planned",
          "date": "2026-06-05T20:39:57.295573Z",
          "details": "CVE-2021-0127 is a local-only CPU issue that requires an authenticated user to execute code on the affected host and results solely in a denial of service, with no confidentiality or integrity impact. The CVSS scope is unchanged, indicating no cross-boundary impact beyond the local system or workload. Combined with vendor firmware updates made available since 2022, this makes the practical risk to managed server and VM environments low and suitable for de-prioritization.",
          "product_ids": [
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            "CentOS-Stream-8:microcode_ctl-4:20240910-2.el8.x86_64",
            "CentOS-Stream-8:microcode_ctl-4:20250211-2.el8.tuxcare.els1.x86_64",
            "CentOS-Stream-8:microcode_ctl-4:20250211-2.el8.x86_64",
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      "scores": [
        {
          "cvss_v2": {
            "accessComplexity": "LOW",
            "accessVector": "LOCAL",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 2.1,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P",
            "version": "2.0"
          },
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
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      "threats": [
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          "category": "impact",
          "details": "Moderate"
        }
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    }
  ]
}