Vulnerability-Lookup

CVE-2026-20709 (GCVE-0-2026-20709)

Vulnerability from cvelistv5 – Published: 2026-04-08 18:20 – Updated: 2026-04-08 19:50

Summary

Use of Default Cryptographic Key in the hardware for some Intel(R) Pentium(R) Processor Silver Series, Intel(R) Celeron(R) Processor J Series, Intel(R) Celeron(R) Processor N Series may allow an escalation of privilege. Hardware reverse engineer adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. This result may potentially occur via physical access when attack requirements are present with special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (high) and availability (none) impacts.

Severity

6.6 (Medium)


                        
                          CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

Escalation of Privilege
CWE-1394 - Use of Default Cryptographic Key

Assigner

intel

References

1 reference

URL	Tags
https://intel.com/content/www/us/en/security-cent…

Impacted products

1 product

Vendor	Product	Version
n/a	Intel(R) Pentium(R) Processor Silver Series, Intel(R) Celeron(R) Processor J Series, Intel(R) Celeron(R) Processor N Series may allow an escalation of privilege. Hardware reverse engineer adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. This result may potentially occur via physical access when attack requirements are present with special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (high) and availability (none) impacts.	Affected: See references

Show details on NVD website

JSON

To clipboard

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                "id": "CVE-2026-20709",
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                  },
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                "role": "CISA Coordinator",
                "timestamp": "2026-04-08T19:49:48.538705Z",
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            "privilegesRequired": "HIGH",
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La vulnerabilidad potencial puede impactar la confidencialidad (alta), integridad (ninguna) y disponibilidad (ninguna) del sistema vulnerable, lo que resulta en impactos posteriores en la confidencialidad (alta), integridad (alta) y disponibilidad (ninguna) del sistema.\"}],\"affected\":[{\"source\":\"secure@intel.com\",\"affectedData\":[{\"vendor\":\"n/a\",\"product\":\"Intel(R) Pentium(R) Processor Silver Series, Intel(R) Celeron(R) Processor J Series, Intel(R) Celeron(R) Processor N Series may allow an escalation of privilege. Hardware reverse engineer adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. This result may potentially occur via physical access when attack requirements are present with special internal knowledge and requires no user interaction. 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    "redhat_vex": {
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      "source": "Red Hat CSAF VEX",
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      "title": "microcode_ctl: Intel Processors: Escalation of privilege due to default cryptographic key",
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FKIE_CVE-2026-20709

Vulnerability from fkie_nvd - Published: 2026-04-08 19:25 - Updated: 2026-06-17 10:17

Severity

6.6 (Medium) - CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N

Summary

References

	URL	Tags
	secure@intel.com	https://intel.com/content/www/us/en/security-center/advisory/intel-sa-00609.html

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Intel(R) Pentium(R) Processor Silver Series, Intel(R) Celeron(R) Processor J Series, Intel(R) Celeron(R) Processor N Series may allow an escalation of privilege. Hardware reverse engineer adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. This result may potentially occur via physical access when attack requirements are present with special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (high) and availability (none) impacts.",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "See references"
            }
          ]
        }
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      "source": "secure@intel.com"
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    }
  ],
  "id": "CVE-2026-20709",
  "lastModified": "2026-06-17T10:17:43.850",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "PHYSICAL",
          "availabilityImpact": "NONE",
          "baseScore": 6.6,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N",
          "version": "3.1"
        },
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        "impactScore": 5.8,
        "source": "secure@intel.com",
        "type": "Secondary"
      }
    ],
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          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "HIGH",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "HIGH",
          "subIntegrityImpact": "HIGH",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:P/AC:H/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "secure@intel.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
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          "options": [
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              "exploitation": "none"
            },
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            },
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            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-04-08T19:49:48.538705Z",
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  },
  "published": "2026-04-08T19:25:12.600",
  "references": [
    {
      "source": "secure@intel.com",
      "url": "https://intel.com/content/www/us/en/security-center/advisory/intel-sa-00609.html"
    }
  ],
  "sourceIdentifier": "secure@intel.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1394"
        }
      ],
      "source": "secure@intel.com",
      "type": "Secondary"
    }
  ]
}

GHSA-VFXW-PRHR-FVHH

Vulnerability from github – Published: 2026-04-08 21:33 – Updated: 2026-04-08 21:33

Details

Severity

6.6 (Medium)


                  
                    CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N

5.8 (Medium)


                  
                    CVSS:4.0/AV:P/AC:H/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-20709"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1394"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-08T19:25:12Z",
    "severity": "MODERATE"
  },
  "details": "Use of Default Cryptographic Key in the hardware for some Intel(R) Pentium(R) Processor Silver Series, Intel(R) Celeron(R) Processor J Series, Intel(R) Celeron(R) Processor N Series may allow an escalation of privilege. Hardware reverse engineer adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. This result may potentially occur via physical access when attack requirements are present with special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (high), integrity (high) and availability (none) impacts.",
  "id": "GHSA-vfxw-prhr-fvhh",
  "modified": "2026-04-08T21:33:32Z",
  "published": "2026-04-08T21:33:32Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20709"
    },
    {
      "type": "WEB",
      "url": "https://intel.com/content/www/us/en/security-center/advisory/intel-sa-00609.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:P/AC:H/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

WID-SEC-W-2026-1020

Vulnerability from csaf_certbund - Published: 2026-04-08 22:00 - Updated: 2026-04-09 22:00

Summary

Intel Prozessoren (Pentium Silver Series, Celeron J Series, und Celeron N series): Schwachstelle ermöglicht Privilegieneskalation

Severity

Mittel

Notes

Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.

Produktbeschreibung: Der Prozessor ist das zentrale Rechenwerk eines Computers.

Angriff: Ein Angreifer mit physischem Zugriff kann eine Schwachstelle in verschiedenen Intel Prozessoren (Pentium Silver Series, Celeron J Series, und Celeron N series) ausnutzen, um seine Privilegien zu erhöhen.

Betroffene Betriebssysteme: - BIOS/Firmware

CVE-2026-20709

Affected products

Known affected 3 products

Product	Identifier	Version
Intel Prozessor Pentium Silver Series Intel / Prozessor	`cpe:/h:intel:intel_prozessor:pentium_silver_series`	Pentium Silver Series
Intel Prozessor Celeron J Series Intel / Prozessor	`cpe:/h:intel:intel_prozessor:celeron_j_series`	Celeron J Series
Intel Prozessor Celeron N Series Intel / Prozessor	`cpe:/h:intel:intel_prozessor:celeron_n_series`	Celeron N Series

References

3 references

URL	Category
https://wid.cert-bund.de/.well-known/csaf/white/2…	self
https://wid.cert-bund.de/portal/wid/securityadvis…	self
https://www.intel.com/content/www/us/en/security-…	external

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "text": "mittel"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "Der Prozessor ist das zentrale Rechenwerk eines Computers.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein Angreifer mit physischem Zugriff kann eine Schwachstelle in verschiedenen Intel Prozessoren (Pentium Silver Series, Celeron J Series, und Celeron N series) ausnutzen, um seine Privilegien zu erh\u00f6hen.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- BIOS/Firmware",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2026-1020 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1020.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2026-1020 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1020"
      },
      {
        "category": "external",
        "summary": "Intel Security Advisory INTEL-SA-00609 vom 2026-04-08",
        "url": "https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00609.html"
      }
    ],
    "source_lang": "en-US",
    "title": "Intel Prozessoren (Pentium Silver Series, Celeron J Series, und Celeron N series): Schwachstelle erm\u00f6glicht Privilegieneskalation",
    "tracking": {
      "current_release_date": "2026-04-09T22:00:00.000+00:00",
      "generator": {
        "date": "2026-04-10T07:05:12.278+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.5.0"
        }
      },
      "id": "WID-SEC-W-2026-1020",
      "initial_release_date": "2026-04-08T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2026-04-08T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2026-04-09T22:00:00.000+00:00",
          "number": "2",
          "summary": "Referenz(en) aufgenommen: 2456637"
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "Celeron J Series",
                "product": {
                  "name": "Intel Prozessor Celeron J Series",
                  "product_id": "T052553",
                  "product_identification_helper": {
                    "cpe": "cpe:/h:intel:intel_prozessor:celeron_j_series"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "Celeron N Series",
                "product": {
                  "name": "Intel Prozessor Celeron N Series",
                  "product_id": "T052554",
                  "product_identification_helper": {
                    "cpe": "cpe:/h:intel:intel_prozessor:celeron_n_series"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "Pentium Silver Series",
                "product": {
                  "name": "Intel Prozessor Pentium Silver Series",
                  "product_id": "T052555",
                  "product_identification_helper": {
                    "cpe": "cpe:/h:intel:intel_prozessor:pentium_silver_series"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Prozessor"
          }
        ],
        "category": "vendor",
        "name": "Intel"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-20709",
      "product_status": {
        "known_affected": [
          "T052555",
          "T052553",
          "T052554"
        ]
      },
      "release_date": "2026-04-08T22:00:00.000+00:00",
      "title": "CVE-2026-20709"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

CVE-2026-20709 (GCVE-0-2026-20709)

FKIE_CVE-2026-20709

GHSA-VFXW-PRHR-FVHH

WID-SEC-W-2026-1020

Tags

Sightings

Nomenclature