Vulnerability-Lookup

CVE-2026-6485 (GCVE-0-2026-6485)

Vulnerability from cvelistv5 – Published: 2026-09-09 03:54 – Updated: 2026-09-10 14:30

Title

UEFI BIOS embedded Shell can be used to bypass Secure Boot

Summary

UEFI BIOS embedded Shell could be used to bypass Secure Boot via shell commands or startup scripts.

Severity

8.2 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-10 14:30 UTC

CWE

CWE-489 - Active Debug Code

Assigner

Insyde mitre root

References

1 reference

URL	Tags
https://www.insyde.com/security-pledge/sa-2026004/

Impacted products

1 product

Vendor	Product	Version	CPE status
Insyde Software	InsydeH2O	Affected: See in the Solution	guessed

Date Public

2026-09-09 03:50

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-6485",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-10T14:30:08.094399Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-10T14:30:20.224Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "x86",
            "ARM"
          ],
          "product": "InsydeH2O",
          "vendor": "Insyde Software",
          "versions": [
            {
              "status": "affected",
              "version": "See in the Solution"
            }
          ]
        }
      ],
      "datePublic": "2026-09-09T03:50:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "UEFI BIOS embedded Shell could be used to bypass Secure Boot via shell commands or startup scripts."
            }
          ],
          "value": "UEFI BIOS embedded Shell could be used to bypass Secure Boot via shell commands or startup scripts."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-489",
              "description": "CWE-489: Active Debug Code",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-09T03:54:01.460Z",
        "orgId": "8338d8cb-57f7-4252-abc0-96fd13e98d21",
        "shortName": "Insyde"
      },
      "references": [
        {
          "url": "https://www.insyde.com/security-pledge/sa-2026004/"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Kernel 5.3: Version 05.3A.25\u003cbr\u003eKernel 5.4: Version 05.48.25\u003cbr\u003eKernel 5.5: Version 05.56.25\u003cbr\u003eKernel 5.6: Version 05.63.25"
            }
          ],
          "value": "Kernel 5.3: Version 05.3A.25\nKernel 5.4: Version 05.48.25\nKernel 5.5: Version 05.56.25\nKernel 5.6: Version 05.63.25"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "UEFI BIOS embedded Shell can be used to bypass Secure Boot",
      "x_generator": {
        "engine": "Vulnogram 1.0.5"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8338d8cb-57f7-4252-abc0-96fd13e98d21",
    "assignerShortName": "Insyde",
    "cveId": "CVE-2026-6485",
    "datePublished": "2026-09-09T03:54:01.460Z",
    "dateReserved": "2026-04-17T06:07:42.556Z",
    "dateUpdated": "2026-09-10T14:30:20.224Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-6485",
      "date": "2026-09-14",
      "epss": "0.00122",
      "percentile": "0.02238"
    },
    "microsoft_vex": {
      "current_release_date": "2026-09-11T01:02:06.000Z",
      "cve": "CVE-2026-6485",
      "id": "msrc_CVE-2026-6485",
      "initial_release_date": "2026-09-11T01:02:06.000Z",
      "product_status:known_affected": "2",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "UEFI BIOS embedded Shell can be used to bypass Secure Boot",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-6485.json",
      "version": "1"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-6485\",\"sourceIdentifier\":\"8338d8cb-57f7-4252-abc0-96fd13e98d21\",\"published\":\"2026-09-09T04:19:36.437\",\"lastModified\":\"2026-09-10T15:17:39.427\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"UEFI BIOS embedded Shell could be used to bypass Secure Boot via shell commands or startup scripts.\"}],\"affected\":[{\"source\":\"8338d8cb-57f7-4252-abc0-96fd13e98d21\",\"affectedData\":[{\"vendor\":\"Insyde Software\",\"product\":\"InsydeH2O\",\"defaultStatus\":\"unaffected\",\"platforms\":[\"x86\",\"ARM\"],\"versions\":[{\"version\":\"See in the Solution\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"8338d8cb-57f7-4252-abc0-96fd13e98d21\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H\",\"baseScore\":8.2,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.5,\"impactScore\":6.0}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-09-10T14:30:08.094399Z\",\"id\":\"CVE-2026-6485\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"8338d8cb-57f7-4252-abc0-96fd13e98d21\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-489\"}]}],\"references\":[{\"url\":\"https://www.insyde.com/security-pledge/sa-2026004/\",\"source\":\"8338d8cb-57f7-4252-abc0-96fd13e98d21\"}]}}",
    "vulnrichment": {
      "containers": "{\"cna\": {\"title\": \"UEFI BIOS embedded Shell can be used to bypass Secure Boot\", \"source\": {\"discovery\": \"UNKNOWN\"}, \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 8.2, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"HIGH\", \"confidentialityImpact\": \"HIGH\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Insyde Software\", \"product\": \"InsydeH2O\", \"versions\": [{\"status\": \"affected\", \"version\": \"See in the Solution\"}], \"platforms\": [\"x86\", \"ARM\"], \"defaultStatus\": \"unaffected\"}], \"solutions\": [{\"lang\": \"en\", \"value\": \"Kernel 5.3: Version 05.3A.25\\nKernel 5.4: Version 05.48.25\\nKernel 5.5: Version 05.56.25\\nKernel 5.6: Version 05.63.25\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Kernel 5.3: Version 05.3A.25\u003cbr\u003eKernel 5.4: Version 05.48.25\u003cbr\u003eKernel 5.5: Version 05.56.25\u003cbr\u003eKernel 5.6: Version 05.63.25\", \"base64\": false}]}], \"datePublic\": \"2026-09-09T03:50:00.000Z\", \"references\": [{\"url\": \"https://www.insyde.com/security-pledge/sa-2026004/\"}], \"x_generator\": {\"engine\": \"Vulnogram 1.0.5\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"UEFI BIOS embedded Shell could be used to bypass Secure Boot via shell commands or startup scripts.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"UEFI BIOS embedded Shell could be used to bypass Secure Boot via shell commands or startup scripts.\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-489\", \"description\": \"CWE-489: Active Debug Code\"}]}], \"providerMetadata\": {\"orgId\": \"8338d8cb-57f7-4252-abc0-96fd13e98d21\", \"shortName\": \"Insyde\", \"dateUpdated\": \"2026-09-09T03:54:01.460Z\"}}, \"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-6485\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-09-10T14:30:08.094399Z\"}}}], \"providerMetadata\": {\"shortName\": \"CISA-ADP\", \"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"dateUpdated\": \"2026-09-10T14:30:15.507Z\"}}]}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-6485\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-09-09T03:54:01.460Z\", \"dateReserved\": \"2026-04-17T06:07:42.556Z\", \"assignerOrgId\": \"8338d8cb-57f7-4252-abc0-96fd13e98d21\", \"datePublished\": \"2026-09-09T03:54:01.460Z\", \"assignerShortName\": \"Insyde\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

FKIE_CVE-2026-6485

Vulnerability from fkie_nvd - Published: 2026-09-09 04:19 - Updated: 2026-09-10 15:17

Severity

8.2 (High) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Summary

UEFI BIOS embedded Shell could be used to bypass Secure Boot via shell commands or startup scripts.

References

	URL	Tags
	8338d8cb-57f7-4252-abc0-96fd13e98d21	https://www.insyde.com/security-pledge/sa-2026004/

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "platforms": [
            "x86",
            "ARM"
          ],
          "product": "InsydeH2O",
          "vendor": "Insyde Software",
          "versions": [
            {
              "status": "affected",
              "version": "See in the Solution"
            }
          ]
        }
      ],
      "source": "8338d8cb-57f7-4252-abc0-96fd13e98d21"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "UEFI BIOS embedded Shell could be used to bypass Secure Boot via shell commands or startup scripts."
    }
  ],
  "id": "CVE-2026-6485",
  "lastModified": "2026-09-10T15:17:39.427",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 8.2,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.5,
        "impactScore": 6.0,
        "source": "8338d8cb-57f7-4252-abc0-96fd13e98d21",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-6485",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-10T14:30:08.094399Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-09T04:19:36.437",
  "references": [
    {
      "source": "8338d8cb-57f7-4252-abc0-96fd13e98d21",
      "url": "https://www.insyde.com/security-pledge/sa-2026004/"
    }
  ],
  "sourceIdentifier": "8338d8cb-57f7-4252-abc0-96fd13e98d21",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-489"
        }
      ],
      "source": "8338d8cb-57f7-4252-abc0-96fd13e98d21",
      "type": "Secondary"
    }
  ]
}

GHSA-J5PH-5JRP-HF3X

Vulnerability from github – Published: 2026-09-09 06:31 – Updated: 2026-09-09 06:31

Details

UEFI BIOS embedded Shell could be used to bypass Secure Boot via shell commands or startup scripts.

Severity

8.2 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-6485"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-489"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-09T04:19:36Z",
    "severity": "HIGH"
  },
  "details": "UEFI BIOS embedded Shell could be used to bypass Secure Boot via shell commands or startup scripts.",
  "id": "GHSA-j5ph-5jrp-hf3x",
  "modified": "2026-09-09T06:31:37Z",
  "published": "2026-09-09T06:31:37Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6485"
    },
    {
      "type": "WEB",
      "url": "https://www.insyde.com/security-pledge/sa-2026004"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

MSRC_CVE-2026-6485

Vulnerability from csaf_microsoft - Published: 2026-09-11 01:02 - Updated: 2026-09-11 01:02

Summary

UEFI BIOS embedded Shell can be used to bypass Secure Boot

Scope

1 vulnerability in this advisory, including CVE-2026-6485.

CVE-2026-6485

8.2 (High)


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

Known affected: 2 products

Open the full advisory

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.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-6485 (GCVE-0-2026-6485)

FKIE_CVE-2026-6485

GHSA-J5PH-5JRP-HF3X

MSRC_CVE-2026-6485

Tags

Sightings

Nomenclature